Klaviyo (KVYO)
Klaviyo on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, earnings dates and insider trades. Listed on NYSE, classified by the SEC as services-prepackaged software.
20.2M
Short interest
settlement 2026-10-15
4.3
Days to cover
+1.3 days vs prior
52.5%
Short share of volume
2026-11-02
149
Fails to deliver
settlement 2026-10-06
Wed 4 Nov
Next earnings
estimated date
-$93.8M
Insider flow, 90 days
0 buys, 11 sells
As of 2026-11-02.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 15 October 2026, short interest in KVYO is 20,161,862 shares, up 524,152 shares over the last month. Over the last 48 readings it ranged from 4,360,471 shares (14 March 2025) to 26,044,121 shares (14 August 2026). At the reported average volume of 4.7M shares a day that is 4.3 days to cover.
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| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 20,161,862 | -4.2% | 4,746,676 | 4.25 |
| 2026-09-30 | 21,054,082 | +7.2% | 7,178,896 | 2.93 |
| 2026-09-15 | 19,637,710 | -8.0% | 6,539,017 | 3.00 |
| 2026-08-31 | 21,333,740 | -18.1% | 4,820,399 | 4.43 |
| 2026-08-14 | 26,044,121 | +38.5% | 9,311,805 | 2.80 |
| 2026-07-31 | 18,800,651 | -22.3% | 4,112,352 | 4.57 |
| 2026-07-15 | 24,193,487 | +8.2% | 4,508,558 | 5.37 |
| 2026-06-30 | 22,357,421 | +18.5% | 7,107,919 | 3.15 |
| 2026-06-15 | 18,864,142 | -26.3% | 5,806,079 | 3.25 |
| 2026-05-29 | 25,590,887 | +17.4% | 7,460,313 | 3.43 |
| 2026-05-15 | 21,799,025 | +36.7% | 10,295,879 | 2.12 |
| 2026-04-30 | 15,946,593 | +27.0% | 4,611,676 | 3.46 |
| 2026-04-15 | 12,553,986 | +25.1% | 4,057,750 | 3.09 |
| 2026-03-31 | 10,038,330 | -34.3% | 3,044,569 | 3.30 |
| 2026-03-13 | 15,272,956 | +48.0% | 4,355,341 | 3.51 |
| 2026-02-27 | 10,317,327 | +7.6% | 5,581,470 | 1.85 |
| 2026-02-13 | 9,585,498 | -0.1% | 6,555,625 | 1.46 |
| 2026-01-30 | 9,591,801 | +6.9% | 3,220,629 | 2.98 |
| 2026-01-15 | 8,969,329 | -20.4% | 4,142,138 | 2.17 |
| 2025-12-31 | 11,260,278 | +12.7% | 2,064,608 | 5.45 |
| 2025-12-15 | 9,987,453 | -14.6% | 2,187,587 | 4.57 |
| 2025-11-28 | 11,699,198 | -5.0% | 1,903,913 | 6.14 |
| 2025-11-14 | 12,314,232 | +70.1% | 4,758,649 | 2.59 |
| 2025-10-31 | 7,241,282 | +5.3% | 2,247,763 | 3.22 |
| 2025-10-15 | 6,873,606 | -13.7% | 3,664,012 | 1.88 |
| 2025-09-30 | 7,966,817 | +16.7% | 4,147,738 | 1.92 |
| 2025-09-15 | 6,827,743 | +1.8% | 1,953,575 | 3.49 |
| 2025-08-29 | 6,707,971 | -14.2% | 1,720,122 | 3.90 |
| 2025-08-15 | 7,816,533 | +42.2% | 3,482,010 | 2.24 |
| 2025-07-31 | 5,498,502 | -2.6% | 1,171,726 | 4.69 |
| 2025-07-15 | 5,644,542 | +4.0% | 1,048,589 | 5.38 |
| 2025-06-30 | 5,425,707 | +19.5% | 1,750,546 | 3.10 |
| 2025-06-13 | 4,540,305 | -20.0% | 2,106,691 | 2.16 |
| 2025-05-30 | 5,673,920 | -39.0% | 2,292,003 | 2.48 |
| 2025-05-15 | 9,304,612 | -1.2% | 3,917,326 | 2.38 |
| 2025-04-30 | 9,420,362 | +42.7% | 2,224,994 | 4.23 |
| 2025-04-15 | 6,600,186 | +18.4% | 2,155,534 | 3.06 |
| 2025-03-31 | 5,574,221 | +27.8% | 1,187,932 | 4.69 |
| 2025-03-14 | 4,360,471 | -10.3% | 1,912,239 | 2.28 |
| 2025-02-28 | 4,862,495 | -6.9% | 1,972,186 | 2.47 |
| 2025-02-14 | 5,224,343 | -9.8% | 1,156,113 | 4.52 |
| 2025-01-31 | 5,788,453 | -12.6% | 1,200,290 | 4.82 |
| 2025-01-15 | 6,625,902 | +0.0% | 854,604 | 7.75 |
| 2024-12-31 | 6,625,139 | +9.4% | 1,535,559 | 4.31 |
| 2024-12-13 | 6,057,885 | +4.5% | 1,140,397 | 5.31 |
| 2024-11-29 | 5,800,000 | -24.6% | 1,237,820 | 4.69 |
| 2024-11-15 | 7,689,802 | +8.2% | 2,346,052 | 3.28 |
| 2024-10-31 | 7,104,937 | -14.6% | 704,645 | 10.08 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 2 November 2026, the short share of KVYO volume is 52.5%, up 0.7 points over the last five sessions. Over the last 30 readings it ranged from 48.8% (1 October 2026) to 74.0% (15 October 2026). The latest reading is 8.6 points below the 30-session average of 61.1%, on 3.8M shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-11-02 | 2.0M | 3.8M | 52.5% | 383 |
| 2026-10-30 | 574K | 1.0M | 55.7% | 1,245 |
| 2026-10-29 | 498K | 879K | 56.6% | 672 |
| 2026-10-28 | 630K | 1.1M | 56.9% | 6,900 |
| 2026-10-27 | 663K | 1.1M | 60.5% | 825 |
| 2026-10-26 | 694K | 1.3M | 51.8% | 3,427 |
| 2026-10-23 | 842K | 1.3M | 64.5% | 2,188 |
| 2026-10-22 | 928K | 1.6M | 56.9% | 6,061 |
| 2026-10-21 | 693K | 1.3M | 51.6% | 7,991 |
| 2026-10-20 | 3.1M | 5.2M | 60.0% | 55,352 |
| 2026-10-19 | 702K | 962K | 73.0% | 738 |
| 2026-10-16 | 1.2M | 1.7M | 73.9% | 426 |
| 2026-10-15 | 1.5M | 2.0M | 74.0% | 210 |
| 2026-10-14 | 585K | 996K | 58.7% | 16,303 |
| 2026-10-13 | 651K | 973K | 67.0% | 348 |
| 2026-10-12 | 668K | 1.0M | 63.7% | 8,580 |
| 2026-10-09 | 670K | 1.2M | 56.0% | 73 |
| 2026-10-08 | 1.1M | 1.9M | 58.9% | 8,469 |
| 2026-10-07 | 2.6M | 3.7M | 70.3% | 55,050 |
| 2026-10-06 | 1.1M | 1.7M | 62.9% | 0 |
| 2026-10-05 | 926K | 1.8M | 52.0% | 260 |
| 2026-10-02 | 614K | 1.0M | 60.8% | 1,691 |
| 2026-10-01 | 713K | 1.5M | 48.8% | 32,926 |
| 2026-09-30 | 926K | 1.5M | 63.6% | 0 |
| 2026-09-29 | 1.7M | 2.6M | 66.4% | 1,000 |
| 2026-09-28 | 2.3M | 3.6M | 64.5% | 1,210 |
| 2026-09-25 | 845K | 1.4M | 59.6% | 1,116 |
| 2026-09-24 | 1.7M | 2.5M | 68.2% | 706 |
| 2026-09-23 | 2.3M | 3.5M | 66.8% | 3,053 |
| 2026-09-22 | 1.7M | 2.9M | 56.8% | 16,953 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 6 October 2026, the fails-to-deliver balance in KVYO is 149 shares, down 38,026 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (30 June 2026) to 269,372 shares (20 July 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-10-06 | 149 | $16.70 | $2K |
| 2026-09-24 | 38,175 | $16.78 | $641K |
| 2026-09-18 | 884 | $15.87 | $14K |
| 2026-09-17 | 13,795 | $16.23 | $224K |
| 2026-09-16 | 13,617 | $16.98 | $231K |
| 2026-09-15 | 1,766 | $17.40 | $31K |
| 2026-09-14 | 13,523 | $16.36 | $221K |
| 2026-09-11 | 13,523 | $16.13 | $218K |
| 2026-09-10 | 13,656 | $16.27 | $222K |
| 2026-09-09 | 13,656 | $17.89 | $244K |
| 2026-09-04 | 1,816 | $19.76 | $36K |
| 2026-09-03 | 3,120 | $19.31 | $60K |
| 2026-09-02 | 1,797 | $20.64 | $37K |
| 2026-08-27 | 238 | $17.79 | $4K |
| 2026-08-26 | 993 | $17.60 | $17K |
| 2026-08-24 | 668 | $18.33 | $12K |
| 2026-08-21 | 24 | $18.11 | $435 |
| 2026-08-14 | 4,437 | $19.22 | $85K |
| 2026-08-13 | 19,098 | $17.25 | $329K |
| 2026-08-12 | 90,601 | $18.36 | $1.7M |
| 2026-08-06 | 54,229 | $19.30 | $1.0M |
| 2026-08-04 | 83,098 | $18.10 | $1.5M |
| 2026-08-03 | 177,216 | $17.84 | $3.2M |
| 2026-07-20 | 269,372 | $17.67 | $4.8M |
| 2026-07-17 | 31 | $17.82 | $552 |
| 2026-07-16 | 67,145 | $17.63 | $1.2M |
| 2026-07-10 | 400 | $17.16 | $7K |
| 2026-07-06 | 42,607 | $16.90 | $720K |
| 2026-07-02 | 83,167 | $16.36 | $1.4M |
| 2026-06-30 | 1 | $14.93 | $15 |
Insider trades
SEC Form 4, newest first. JSONInsiders at KVYO reported 11 open-market sells worth $93.8M in the last 90 days and no open-market buys. Latest filing: Hallen Ed (Director, 10% owner) on 2026-10-08.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-10-08 | Hallen Ed | Director, 10% owner | Gift | 18K | $0.00 | $0 | 370K |
| 2026-10-07 | Hallen Ed | Director, 10% owner | Sell | 59K | $17.40 | $1.0M | 388K |
| 2026-10-07 | Hallen Ed | Director, 10% owner | Sell | 39K | $17.40 | $673K | 55K |
| 2026-09-24 | Hallen Ed | Director, 10% owner | Sell | 800 | $17.02 | $14K | 447K |
| 2026-09-24 | Hallen Ed | Director, 10% owner | Sell | 500 | $17.02 | $9K | 94K |
| 2026-09-15 | Smith Erica Ellen | Chief Financial Officer | Grant | 329K | $0.00 | $0 | 1.2M |
| 2026-09-15 | Smith Erica Ellen | Chief Financial Officer | Grant | 822K | $0.00 | $0 | 822K |
| 2026-09-11 | St. Ledger Susan | Director | Sell | 2K | $15.93 | $37K | 23K |
| 2026-08-31 | Hallen Ed | Director, 10% owner | Gift | 18K | $0.00 | $0 | 448K |
| 2026-08-31 | Hallen Ed | Director, 10% owner | Sell | 60K | $20.49 | $1.2M | 466K |
| 2026-08-31 | Hallen Ed | Director, 10% owner | Sell | 39K | $20.47 | $802K | 94K |
| 2026-08-31 | Edmond Landon | Chief Legal Officer | Sell | 8K | $20.44 | $166K | 478K |
| 2026-08-28 | Edmond Landon | Chief Legal Officer | Sell | 53K | $20.01 | $1.1M | 486K |
| 2026-08-15 | Fernandez Gomez Luciano | Co-Chief Executive Officer | Tax withholding | 29K | $18.49 | $539K | 2.3M |
| 2026-08-15 | Fernandez Gomez Luciano | Co-Chief Executive Officer | Conversion | 7K | price not stated in the filing | not stated | 2.3M |
| 2026-08-15 | Whalen Amanda | Chief Financial Officer | Tax withholding | 29K | $18.49 | $535K | 795K |
| 2026-08-15 | Edmond Landon | Chief Legal Officer | Tax withholding | 22K | $18.49 | $413K | 539K |
| 2026-08-15 | Galvin Carmel | Chief People Officer | Tax withholding | 31K | $18.49 | $565K | 907K |
| 2026-08-14 | Whalen Amanda | Chief Financial Officer | Sell | 14K | $18.47 | $259K | 824K |
| 2026-08-11 | SUMMIT PARTNERS L P | 10% owner | Sell | 5.0M | $17.71 | $88.5M | 0 |
| 2026-08-11 | SUMMIT PARTNERS L P | 10% owner | Conversion | 5.0M | price not stated in the filing | not stated | 5.0M |
| 2026-07-22 | Oulman Roxanne | Director | Conversion | 17K | price not stated in the filing | not stated | 17K |
| 2026-07-16 | Whalen Amanda | Chief Financial Officer | Sell | 14K | $17.75 | $249K | 838K |
| 2026-06-18 | Whalen Amanda | Chief Financial Officer | Sell | 14K | $13.23 | $185K | 852K |
| 2026-06-11 | Oulman Roxanne | Director | Conversion | 8K | price not stated in the filing | not stated | 37K |
| 2026-06-09 | Oulman Roxanne | Director | Grant | 15K | $0.00 | $0 | 29K |
| 2026-06-09 | St. Ledger Susan | Director | Grant | 15K | $0.00 | $0 | 26K |
| 2026-06-09 | Weisman Tony | Director | Grant | 15K | $0.00 | $0 | 104K |
| 2026-06-09 | Fernandez Gomez Luciano | Co-Chief Executive Officer | Tax withholding | 2K | $14.78 | $26K | 2.3M |
| 2026-06-09 | Ceran Jennifer | Director | Grant | 15K | $0.00 | $0 | 46K |
| 2026-05-26 | Bialecki Andrew | Co-Chief Executive Officer | Conversion | 213K | price not stated in the filing | not stated | 213K |
| 2026-05-26 | Bialecki Andrew | Co-Chief Executive Officer | Sell | 213K | $14.61 | $3.1M | 0 |
| 2026-05-19 | Bialecki Andrew | Co-Chief Executive Officer | Sell | 200K | $14.88 | $3.0M | 0 |
| 2026-05-19 | Bialecki Andrew | Co-Chief Executive Officer | Conversion | 200K | price not stated in the filing | not stated | 200K |
| 2026-05-18 | St. Ledger Susan | Director | Conversion | 9K | price not stated in the filing | not stated | 20K |
| 2026-05-18 | St. Ledger Susan | Director | Sell | 9K | $14.27 | $133K | 11K |
| 2026-05-15 | Whalen Amanda | Chief Financial Officer | Conversion | 14K | price not stated in the filing | not stated | 909K |
| 2026-05-15 | Whalen Amanda | Chief Financial Officer | Tax withholding | 42K | $14.38 | $611K | 866K |
| 2026-05-15 | Galvin Carmel | Chief People Officer | Tax withholding | 31K | $14.38 | $439K | 938K |
| 2026-05-15 | Fernandez Gomez Luciano | Co-Chief Executive Officer | Tax withholding | 22K | $14.38 | $318K | 2.3M |
| 2026-05-15 | Edmond Landon | Chief Legal Officer | Tax withholding | 22K | $14.38 | $321K | 562K |
| 2026-05-14 | Whalen Amanda | Chief Financial Officer | Sell | 14K | $14.26 | $200K | 895K |
| 2026-05-14 | Whalen Amanda | Chief Financial Officer | Conversion | 14K | price not stated in the filing | not stated | 909K |
| 2026-05-12 | Bialecki Andrew | Co-Chief Executive Officer | Sell | 59K | $14.97 | $878K | 141K |
| 2026-05-12 | Bialecki Andrew | Co-Chief Executive Officer | Sell | 141K | $14.46 | $2.0M | 0 |
| 2026-05-12 | Bialecki Andrew | Co-Chief Executive Officer | Conversion | 200K | price not stated in the filing | not stated | 200K |
| 2026-04-20 | Edmond Landon | Chief Legal Officer | Sell | 10K | $20.00 | $192K | 584K |
| 2026-04-16 | Whalen Amanda | Chief Financial Officer | Sell | 14K | $18.54 | $260K | 895K |
| 2026-04-16 | Whalen Amanda | Chief Financial Officer | Conversion | 4K | price not stated in the filing | not stated | 909K |
| 2026-04-15 | Whalen Amanda | Chief Financial Officer | Grant | 227K | $0.00 | $0 | 905K |
| 2026-04-15 | Whalen Amanda | Chief Financial Officer | Grant | 265K | $0.00 | $0 | 678K |
| 2026-04-15 | Galvin Carmel | Chief People Officer | Grant | 162K | $0.00 | $0 | 969K |
| 2026-04-15 | Galvin Carmel | Chief People Officer | Grant | 189K | $0.00 | $0 | 806K |
| 2026-04-15 | Edmond Landon | Chief Legal Officer | Grant | 130K | $0.00 | $0 | 594K |
| 2026-04-15 | Edmond Landon | Chief Legal Officer | Grant | 152K | $0.00 | $0 | 464K |
| 2026-04-14 | Bialecki Andrew | Co-Chief Executive Officer | Conversion | 200K | price not stated in the filing | not stated | 200K |
| 2026-04-14 | Bialecki Andrew | Co-Chief Executive Officer | Sell | 109K | $17.39 | $1.9M | 91K |
| 2026-04-14 | Bialecki Andrew | Co-Chief Executive Officer | Sell | 91K | $16.94 | $1.5M | 0 |
| 2026-04-07 | Bialecki Andrew | Co-Chief Executive Officer | Conversion | 200K | price not stated in the filing | not stated | 200K |
| 2026-04-07 | Bialecki Andrew | Co-Chief Executive Officer | Sell | 200K | $18.63 | $3.7M | 0 |
| 2026-03-31 | Bialecki Andrew | Co-Chief Executive Officer | Sell | 200K | $19.42 | $3.9M | 0 |
| 2026-03-31 | Bialecki Andrew | Co-Chief Executive Officer | Conversion | 200K | price not stated in the filing | not stated | 200K |
| 2026-03-24 | Bialecki Andrew | Co-Chief Executive Officer | Sell | 200K | $18.17 | $3.6M | 0 |
| 2026-03-24 | Bialecki Andrew | Co-Chief Executive Officer | Conversion | 200K | price not stated in the filing | not stated | 200K |
| 2026-03-17 | Bialecki Andrew | Co-Chief Executive Officer | Sell | 97K | $19.60 | $1.9M | 103K |
| 2026-03-17 | Bialecki Andrew | Co-Chief Executive Officer | Sell | 103K | $19.15 | $2.0M | 0 |
| 2026-03-17 | Bialecki Andrew | Co-Chief Executive Officer | Conversion | 200K | price not stated in the filing | not stated | 200K |
| 2026-03-12 | Whalen Amanda | Chief Financial Officer | Sell | 5K | $19.34 | $98K | 412K |
| 2026-03-12 | Whalen Amanda | Chief Financial Officer | Sell | 9K | $19.72 | $176K | 418K |
| 2026-03-12 | Edmond Landon | Chief Legal Officer | Sell | 14K | $20.15 | $289K | 312K |
| 2026-03-10 | Bialecki Andrew | Co-Chief Executive Officer | Sell | 700 | $19.34 | $14K | 0 |
| 2026-03-10 | Bialecki Andrew | Co-Chief Executive Officer | Sell | 206K | $19.96 | $4.1M | 700 |
| 2026-03-10 | Bialecki Andrew | Co-Chief Executive Officer | Conversion | 207K | price not stated in the filing | not stated | 207K |
| 2026-03-05 | Edmond Landon | Chief Legal Officer | Sell | 15K | $20.16 | $304K | 327K |
| 2026-03-03 | Bialecki Andrew | Co-Chief Executive Officer | Conversion | 200K | price not stated in the filing | not stated | 200K |
| 2026-03-03 | Bialecki Andrew | Co-Chief Executive Officer | Sell | 154K | $18.86 | $2.9M | 46K |
| 2026-03-03 | Bialecki Andrew | Co-Chief Executive Officer | Sell | 46K | $17.90 | $823K | 0 |
| 2026-02-24 | Bialecki Andrew | Co-Chief Executive Officer | Sell | 40K | $16.38 | $649K | 0 |
| 2026-02-24 | Bialecki Andrew | Co-Chief Executive Officer | Sell | 160K | $16.86 | $2.7M | 40K |
| 2026-02-24 | Bialecki Andrew | Co-Chief Executive Officer | Conversion | 200K | price not stated in the filing | not stated | 200K |
| 2026-02-17 | Edmond Landon | Chief Legal Officer | Conversion | 11K | price not stated in the filing | not stated | 342K |
| 2026-02-15 | Whalen Amanda | Chief Financial Officer | Tax withholding | 45K | $18.60 | $843K | 426K |
| 2026-02-15 | Whalen Amanda | Chief Financial Officer | Conversion | 30K | price not stated in the filing | not stated | 472K |
| 2026-02-15 | Edmond Landon | Chief Legal Officer | Conversion | 11K | price not stated in the filing | not stated | 355K |
| 2026-02-15 | Edmond Landon | Chief Legal Officer | Tax withholding | 25K | $18.60 | $457K | 331K |
| 2026-02-15 | Galvin Carmel | Chief People Officer | Tax withholding | 23K | $18.60 | $429K | 617K |
| 2026-02-15 | Fernandez Gomez Luciano | Co-Chief Executive Officer | Tax withholding | 23K | $18.60 | $434K | 2.3M |
| 2026-02-13 | Whalen Amanda | Chief Financial Officer | Conversion | 14K | price not stated in the filing | not stated | 456K |
| 2026-02-13 | Whalen Amanda | Chief Financial Officer | Sell | 5K | $18.63 | $88K | 442K |
| 2026-02-13 | Whalen Amanda | Chief Financial Officer | Sell | 9K | $19.01 | $176K | 447K |
| 2026-02-12 | Ceran Jennifer | Director | Buy | 16K | $18.38 | $300K | 31K |
| 2026-01-27 | Bialecki Andrew | Co-Chief Executive Officer | Sell | 5K | $24.94 | $113K | 0 |
| 2026-01-27 | Bialecki Andrew | Co-Chief Executive Officer | Sell | 151K | $25.34 | $3.8M | 5K |
| 2026-01-27 | Bialecki Andrew | Co-Chief Executive Officer | Conversion | 155K | price not stated in the filing | not stated | 155K |
| 2026-01-20 | Bialecki Andrew | Co-Chief Executive Officer | Sell | 167K | $24.16 | $4.0M | 796 |
| 2026-01-20 | Bialecki Andrew | Co-Chief Executive Officer | Sell | 796 | $23.29 | $19K | 0 |
| 2026-01-20 | Bialecki Andrew | Co-Chief Executive Officer | Conversion | 168K | price not stated in the filing | not stated | 168K |
| 2026-01-15 | Whalen Amanda | Chief Financial Officer | Sell | 6K | $25.52 | $158K | 442K |
| 2026-01-15 | Whalen Amanda | Chief Financial Officer | Conversion | 4K | price not stated in the filing | not stated | 456K |
| 2026-01-15 | Whalen Amanda | Chief Financial Officer | Sell | 8K | $26.08 | $204K | 448K |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.
Planned sales (Form 144)
Newest first. JSON37 Form 144 notices on file for KVYO worth $187.5M at the prices reported; 12 in the last 90 days worth $97.5M. Latest: Hallen Ed filed on 2026-10-07 to sell 97,482 shares ($1.7M) from 2026-10-07.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-10-07 | Hallen EdOfficer, Director | 97K | $1.7M | 0.077% | 2026-10-07 | Fidelity Brokerage Services LLC |
| 2026-09-24 | Hallen EdOfficer, Director | 1K | $22K | 0.001% | 2026-09-24 | Fidelity Brokerage Services LLC |
| 2026-09-17 | AMANDA WHALENOfficer | 42K | $682K | 0.033% | 2026-09-17 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-09-11 | St. Ledger SusanDirector | 2K | $37K | 0.002% | 2026-09-11 | Fidelity Brokerage Services LLC |
| 2026-08-31 | Hallen EdOfficer, Director | 99K | $2.0M | 0.078% | 2026-08-31 | Fidelity Brokerage Services LLC |
| 2026-08-31 | LANDON RAMON EDMONDOfficer | 8K | $163K | 0.006% | 2026-08-31 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-28 | LANDON EDMONDOfficer | 53K | $1.0M | 0.042% | 2026-08-28 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-11 | Summit Investors GE IX/VC IV (UK), L.P.10% Stockholder | 2K | $37K | 0.002% | 2026-08-11 | Goldman Sachs & Co. LLC |
| 2026-08-11 | Summit Partners Co-Invest (Kiwi) L.P.10% Stockholder | 182K | $3.3M | 0.144% | 2026-08-11 | Goldman Sachs & Co. LLC |
| 2026-08-11 | Summit Investors GE IX-VC IV, LLC10% Stockholder | 16K | $285K | 0.012% | 2026-08-11 | Goldman Sachs & Co. LLC |
| 2026-08-11 | Summit Partners Growth Equity Fund IX-B, L.P.10% Stockholder | 1.8M | $33.9M | 1.454% | 2026-08-11 | Goldman Sachs & Co. LLC |
| 2026-08-11 | Summit Partners Growth Equity Fund IX-A, L.P.10% Stockholder | 3.0M | $54.3M | 2.328% | 2026-08-11 | Goldman Sachs & Co. LLC |
| 2026-06-18 | AMANDA WHALENOfficer | 42K | $565K | 0.030% | 2026-06-18 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-26 | ANDREW BIALECKIDirector, Officer, 10% Stockholder | 213K | $3.2M | 0.151% | 2026-05-26 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-18 | St. Ledger SusanDirector | 9K | $133K | 0.007% | 2026-05-18 | Fidelity Brokerage Services LLC |
| 2026-04-20 | LANDON RAMON EDMONDOfficer | 10K | $180K | 0.007% | 2026-04-20 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-04-16 | AMANDA WHALENOfficer | 28K | $514K | 0.019% | 2026-04-16 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-04-07 | ANDREW BIALECKIDirector, Officer, 10% Stockholder | 638K | $12.3M | 0.438% | 2026-04-07 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-03-17 | STEPHEN E. ROWLANDOfficer | 5K | $95K | 0.003% | 2026-03-17 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-03-12 | LANDON RAMON EDMONDOfficer | 14K | $285K | 0.010% | 2026-03-12 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-03-05 | STEPHEN E. ROWLANDOfficer | 5K | $96K | 0.003% | 2026-03-05 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-02-24 | ANDREW BIALECKIDirector, Officer, 10% Stockholder | 1.4M | $21.4M | 0.928% | 2026-02-24 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-18 | AMANDA WHALENOfficer | 56K | $1.7M | 0.041% | 2025-12-18 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-18 | LANDON RAMON EDMONDOfficer | 39K | $1.2M | 0.028% | 2025-12-18 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-17 | Hallen EdOfficer, Director | 118K | $3.6M | 0.085% | 2025-12-17 | Fidelity Brokerage Services LLC |
| 2025-12-15 | STEPHEN ROWLANDOfficer | 14K | $424K | 0.010% | 2025-12-15 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-15 | Hallen EdOfficer, Director | 757 | $23K | 0.001% | 2025-12-15 | Fidelity Brokerage Services LLC |
| 2025-12-02 | ANDREW BIALECKIDirector, Officer, 10% Stockholder | 1.4M | $38.0M | 0.979% | 2025-12-02 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-11-20 | LANDON RAMON EDMONDOfficer | 14K | $396K | 0.010% | 2025-11-20 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-11-17 | STEPHEN ROWLANDOfficer | 7K | $203K | 0.005% | 2025-11-17 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-11-17 | Galvin CarmelOfficer | 11K | $319K | 0.008% | 2025-11-17 | Fidelity Brokerage Services LLC |
| 2025-11-14 | AMANDA WHALENOfficer | 15K | $427K | 0.011% | 2025-11-14 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-11-12 | Hallen EdOfficer, Director | 3K | $84K | 0.002% | 2025-11-11 | Fidelity Brokerage Services LLC |
| 2025-11-10 | Hallen EdOfficer, Director | 59K | $1.8M | 0.043% | 2025-11-10 | Fidelity Brokerage Services LLC |
| 2025-10-15 | STEPHEN ROWLANDOfficer | 7K | $174K | 0.006% | 2025-10-15 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-09-15 | STEPHEN ROWLANDOfficer | 7K | $222K | 0.006% | 2025-09-15 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-09-15 | Hallen EdOfficer, Director | 90K | $2.8M | 0.077% | 2025-09-15 | Fidelity Brokerage Services LLC |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON10 holders report 5% or more of KVYO in their latest filing, 2 on Schedule 13D (active intent). The largest reported stake is Bialecki Andrew at 35.1% of the class (78,163,529 shares), filed 2026-02-10 for an event on 2025-12-31.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-08-31 | 13D/Ano. 4 | Shopify Strategic Holdings 3 LLCother entity | 33.4M | 20.8% | 2026-08-05 |
| 2026-08-31 | 13D/Ano. 4 | Shopify Inc.corporation | 33.4M | 20.8% | 2026-08-05 |
| 2026-08-06 | 13G/Ano. 1 | FMR LLCparent holding company | 6.6M | 4.7% | 2026-06-30 |
| 2026-08-06 | 13G/Ano. 1 | Abigail P. Johnsonindividual | 6.6M | 4.7% | 2026-06-30 |
| 2026-07-31 | 13G | Vanguard Capital Managementinvestment adviser | 7.1M | 5.0% | 2026-06-30 |
| 2026-07-29 | 13G | BlackRock, Inc.parent holding company | 7.5M | 5.3% | 2026-06-30 |
| 2026-05-14 | 13G/Ano. 1 | Capital International Investorsinvestment adviser | 11.7M | 8.0% | 2026-03-31 |
| 2026-04-29 | 13G | Vanguard Portfolio Managementinvestment adviser | 7.5M | 5.2% | 2026-03-31 |
| 2026-03-27 | 13G/Ano. 4 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
| 2026-03-06 | 13G/Ano. 2 | Morgan Stanleyparent holding company, corporation | 6.0M | 4.1% | 2026-02-28 |
| 2026-02-10 | 13G/Ano. 3 | Bialecki Andrewindividual | 78.2M | 35.1% | 2025-12-31 |
| 2025-11-13 | 13G/Ano. 5 | Summit Partners, L.P.partnership | 18.9M | 12.0% | 2025-09-30 |
| 2025-11-13 | 13G/Ano. 5 | Summit Partners Growth Equity Fund IX-A, L.P.partnership | 11.1M | 7.1% | 2025-09-30 |
| 2025-11-13 | 13G/Ano. 5 | Summit Partners Growth Equity Fund IX-B, L.P.partnership | 7.0M | 4.4% | 2025-09-30 |
| 2025-11-13 | 13G/Ano. 5 | Summit Partners Co-Invest (Kiwi), L.P.partnership | 687K | 0.4% | 2025-09-30 |
| 2025-11-13 | 13G/Ano. 5 | Summit Investors GE IX/VC IV, LLCother entity | 59K | 0.0% | 2025-09-30 |
| 2025-11-13 | 13G/Ano. 5 | Summit Investors GE IX/VC IV (UK), L.P.partnership | 8K | 0.0% | 2025-09-30 |
| 2025-11-05 | 13G/Ano. 1 | Hallen Edindividual | 32.9M | 19.4% | 2025-09-30 |
13F holders
Tracked managers holding KVYO at their latest 13F. JSON7 of the 30 tracked managers held KVYO at their latest 13F, $169.8M in total at quarter-end prices. Millennium Management is the largest at $62.2M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 3 added shares and 4 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Millennium Management | 2026-06-30 | 4.1M | $62.2M | 0.02% | +1.8M |
| Two Sigma Investments | 2026-06-30 | 1.8M | $26.7M | 0.02% | -1.1M |
| Renaissance Technologies | 2026-06-30 | 1.6M | $23.6M | 0.03% | -81K |
| D. E. Shaw & Co. | 2026-06-30 | 1.2M | $18.0M | 0.01% | +1.1M |
| Citadel Advisors | 2026-06-30 | 1.2M | $17.7M | 0.00% | +10K |
| Point72 Asset Management | 2026-06-30 | 1.1M | $16.8M | 0.02% | -558K |
| AQR Capital Management | 2026-06-30 | 318K | $4.8M | 0.00% | -594K |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
What this page is
Klaviyo in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.
This page follows Klaviyo (KVYO), SEC CIK 1835830, listed on NYSE, classified by the SEC as services-prepackaged software. The cross-market tables live on the short interest and insider transactions hubs.
Source and updates
- Short interest
- FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-10-15.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-11-02.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-10-06.JSON and CSV
- Planned sales
- SEC EDGAR Form 144Source: SEC.New notices appear shortly after the SEC posts them; a notice is filed on or before the sale. Latest 2026-10-07.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-08-31.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Earnings dates
- SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-08-05.JSON and CSV
- Insider trades
- SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-10-08.JSON and CSV
- Company record
- EDGAR filing index for CIK 1835830Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 10 requests a minute without a key, 30 with a free key from a free account.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
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Datasets
Frequently Asked Questions
How much of KVYO is sold short?
20,161,862 shares were held short at the 2026-10-15 settlement, 4.3 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is KVYO's daily short volume?
On 2026-11-02, 2,019,490 of the 3,845,881 KVYO shares reported to FINRA were sold short, 52.5% of the day's reported volume. Short volume is a flow for one day, not a position.
Does KVYO have fails to deliver?
The SEC's latest file shows 149 KVYO shares failed to deliver at settlement 2026-10-06. Fails are reported per settlement date and published twice a month with a lag.
Are KVYO insiders buying or selling?
Insiders at KVYO reported 11 open-market sells worth $93.8M in the last 90 days and no open-market buys. Latest filing: Hallen Ed (Director, 10% owner) on 2026-10-08.
Have KVYO insiders filed to sell?
37 Form 144 notices on file for KVYO worth $187.5M at the prices reported; 12 in the last 90 days worth $97.5M. Latest: Hallen Ed filed on 2026-10-07 to sell 97,482 shares ($1.7M) from 2026-10-07.
Who owns 5% or more of KVYO?
10 holders report 5% or more of KVYO in their latest filing, 2 on Schedule 13D (active intent). The largest reported stake is Bialecki Andrew at 35.1% of the class (78,163,529 shares), filed 2026-02-10 for an event on 2025-12-31.
Which tracked 13F managers own KVYO?
7 of the 30 tracked 13F managers held KVYO shares at their latest filing, $169.8M in all. The largest: Izzy Englander's Millennium Management (4.1M shares, $62.2M), Two Sigma Investments (1.8M shares, $26.7M), Renaissance Technologies (1.6M shares, $23.6M), D. E. Shaw & Co. (1.2M shares, $18.0M), Ken Griffin's Citadel Advisors (1.2M shares, $17.7M), Steve Cohen's Point72 Asset Management (1.1M shares, $16.8M). The table above lists all 7.
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.