Ecovyst (ECVT)
Ecovyst 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 chemicals & allied products.
5.9M
Short interest
settlement 2026-09-30
4.4
Days to cover
unchanged vs prior
66.7%
Short share of volume
2026-10-23
252
Fails to deliver
settlement 2026-08-27
Tue 3 Nov
Next earnings
estimated date
$250K
Insider flow, 90 days
1 buys, 0 sells
As of 2026-10-23.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 30 September 2026, short interest in ECVT is 5,939,201 shares, up 810,113 shares over the last month. Over the last 48 readings it ranged from 1,805,721 shares (13 December 2024) to 6,356,317 shares (30 May 2025). The latest reading sits at the top of that range. At the reported average volume of 1.3M shares a day that is 4.4 days to cover.
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| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-09-30 | 5,939,201 | +13.0% | 1,340,156 | 4.43 |
| 2026-09-15 | 5,256,185 | +2.5% | 1,195,047 | 4.40 |
| 2026-08-31 | 5,129,088 | +12.9% | 1,324,568 | 3.87 |
| 2026-08-14 | 4,541,969 | +12.5% | 1,375,321 | 3.30 |
| 2026-07-31 | 4,037,929 | -11.0% | 1,253,910 | 3.22 |
| 2026-07-15 | 4,535,722 | +8.2% | 1,436,622 | 3.16 |
| 2026-06-30 | 4,193,840 | +17.9% | 2,538,076 | 1.65 |
| 2026-06-15 | 3,555,970 | +6.1% | 1,553,545 | 2.29 |
| 2026-05-29 | 3,352,170 | +31.8% | 2,186,742 | 1.53 |
| 2026-05-15 | 2,542,754 | -9.8% | 1,818,146 | 1.40 |
| 2026-04-30 | 2,817,645 | -14.2% | 1,508,600 | 1.87 |
| 2026-04-15 | 3,284,178 | -28.4% | 2,646,993 | 1.24 |
| 2026-03-31 | 4,584,879 | -2.0% | 3,070,821 | 1.49 |
| 2026-03-13 | 4,679,545 | +10.5% | 2,068,289 | 2.26 |
| 2026-02-27 | 4,233,401 | +3.8% | 1,759,736 | 2.41 |
| 2026-02-13 | 4,077,033 | -9.0% | 1,310,047 | 3.11 |
| 2026-01-30 | 4,479,763 | -4.2% | 1,052,292 | 4.26 |
| 2026-01-15 | 4,675,282 | +1.9% | 1,259,671 | 3.71 |
| 2025-12-31 | 4,588,332 | -0.8% | 1,291,890 | 3.55 |
| 2025-12-15 | 4,623,281 | -8.0% | 1,942,731 | 2.38 |
| 2025-11-28 | 5,024,060 | -3.7% | 1,160,852 | 4.33 |
| 2025-11-14 | 5,217,602 | +0.5% | 1,250,860 | 4.17 |
| 2025-10-31 | 5,194,236 | -1.3% | 760,443 | 6.83 |
| 2025-10-15 | 5,260,628 | +1.8% | 1,073,572 | 4.90 |
| 2025-09-30 | 5,168,190 | +14.5% | 1,899,119 | 2.72 |
| 2025-09-15 | 4,512,518 | +9.9% | 1,928,717 | 2.34 |
| 2025-08-29 | 4,106,893 | +3.0% | 956,183 | 4.30 |
| 2025-08-15 | 3,987,684 | -14.3% | 2,019,069 | 1.98 |
| 2025-07-31 | 4,650,344 | -6.1% | 1,608,829 | 2.89 |
| 2025-07-15 | 4,953,645 | -19.9% | 2,334,568 | 2.12 |
| 2025-06-30 | 6,188,101 | -1.5% | 1,223,909 | 5.06 |
| 2025-06-13 | 6,281,945 | -1.2% | 1,277,965 | 4.92 |
| 2025-05-30 | 6,356,317 | +21.2% | 1,228,533 | 5.17 |
| 2025-05-15 | 5,243,132 | +15.6% | 1,457,846 | 3.60 |
| 2025-04-30 | 4,534,102 | +1.8% | 879,126 | 5.16 |
| 2025-04-15 | 4,455,986 | +23.4% | 1,181,751 | 3.77 |
| 2025-03-31 | 3,612,455 | -4.7% | 954,749 | 3.78 |
| 2025-03-14 | 3,790,189 | +10.0% | 1,291,684 | 2.93 |
| 2025-02-28 | 3,445,614 | +26.9% | 1,118,766 | 3.08 |
| 2025-02-14 | 2,715,706 | +1.6% | 623,809 | 4.35 |
| 2025-01-31 | 2,672,198 | -16.9% | 519,450 | 5.14 |
| 2025-01-15 | 3,215,857 | +4.6% | 706,598 | 4.55 |
| 2024-12-31 | 3,074,113 | +70.2% | 867,815 | 3.54 |
| 2024-12-13 | 1,805,721 | -26.2% | 859,624 | 2.10 |
| 2024-11-29 | 2,447,874 | -13.2% | 716,098 | 3.42 |
| 2024-11-15 | 2,818,611 | -0.9% | 1,200,572 | 2.35 |
| 2024-10-31 | 2,844,009 | +2.3% | 998,031 | 2.85 |
| 2024-10-15 | 2,780,521 | -6.2% | 843,337 | 3.30 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 23 October 2026, the short share of ECVT volume is 66.7%, up 16.5 points over the last five sessions. Over the last 30 readings it ranged from 36.2% (20 October 2026) to 79.5% (16 September 2026). The latest reading is 4.0 points above the 30-session average of 62.6%, on 364K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-10-23 | 243K | 364K | 66.7% | 5 |
| 2026-10-22 | 141K | 244K | 57.6% | 51 |
| 2026-10-21 | 338K | 530K | 63.8% | 559 |
| 2026-10-20 | 204K | 564K | 36.2% | 111 |
| 2026-10-19 | 196K | 449K | 43.7% | 190 |
| 2026-10-16 | 231K | 461K | 50.1% | 0 |
| 2026-10-15 | 242K | 343K | 70.5% | 16,872 |
| 2026-10-14 | 153K | 255K | 60.0% | 1,129 |
| 2026-10-13 | 133K | 199K | 66.8% | 0 |
| 2026-10-12 | 161K | 234K | 69.0% | 13 |
| 2026-10-09 | 112K | 172K | 64.8% | 0 |
| 2026-10-08 | 243K | 367K | 66.2% | 0 |
| 2026-10-07 | 253K | 419K | 60.4% | 500 |
| 2026-10-06 | 131K | 215K | 61.0% | 900 |
| 2026-10-05 | 151K | 214K | 70.3% | 0 |
| 2026-10-02 | 257K | 389K | 66.2% | 0 |
| 2026-10-01 | 212K | 395K | 53.6% | 0 |
| 2026-09-30 | 138K | 245K | 56.4% | 0 |
| 2026-09-29 | 179K | 289K | 61.8% | 36 |
| 2026-09-28 | 114K | 186K | 61.4% | 2 |
| 2026-09-25 | 150K | 274K | 54.8% | 0 |
| 2026-09-24 | 122K | 206K | 59.3% | 10 |
| 2026-09-23 | 148K | 293K | 50.7% | 9 |
| 2026-09-22 | 196K | 270K | 72.7% | 0 |
| 2026-09-21 | 163K | 234K | 69.7% | 0 |
| 2026-09-18 | 227K | 291K | 78.1% | 0 |
| 2026-09-17 | 375K | 522K | 71.9% | 1,907 |
| 2026-09-16 | 483K | 607K | 79.5% | 0 |
| 2026-09-15 | 619K | 894K | 69.2% | 3 |
| 2026-09-14 | 344K | 516K | 66.6% | 0 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 27 August 2026, the fails-to-deliver balance in ECVT is 252 shares, down 22 shares over the last settlement date. Over the last 30 readings it ranged from 2 shares (13 January 2026) to 53,792 shares (13 May 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-08-27 | 252 | $10.21 | $3K |
| 2026-08-24 | 274 | $10.44 | $3K |
| 2026-08-14 | 3,532 | $10.08 | $36K |
| 2026-08-11 | 800 | $10.08 | $8K |
| 2026-07-21 | 50 | $12.40 | $620 |
| 2026-07-20 | 1,018 | $12.89 | $13K |
| 2026-07-17 | 431 | $12.88 | $6K |
| 2026-07-16 | 269 | $12.27 | $3K |
| 2026-07-08 | 1,613 | $11.81 | $19K |
| 2026-07-01 | 640 | $12.45 | $8K |
| 2026-06-26 | 512 | $12.12 | $6K |
| 2026-06-25 | 534 | $12.63 | $7K |
| 2026-06-22 | 196 | $12.82 | $3K |
| 2026-06-18 | 26 | $12.88 | $335 |
| 2026-06-08 | 192 | $12.85 | $2K |
| 2026-06-04 | 3,259 | $13.08 | $43K |
| 2026-05-13 | 53,792 | $14.59 | $785K |
| 2026-04-17 | 25,000 | $14.41 | $360K |
| 2026-03-25 | 156 | $12.51 | $2K |
| 2026-03-19 | 5,765 | $11.85 | $68K |
| 2026-03-18 | 9,701 | $12.18 | $118K |
| 2026-03-12 | 4,984 | $11.07 | $55K |
| 2026-03-03 | 1,095 | $11.32 | $12K |
| 2026-02-24 | 678 | $11.42 | $8K |
| 2026-02-12 | 54 | $11.66 | $630 |
| 2026-01-27 | 68 | $11.02 | $749 |
| 2026-01-23 | 3,075 | $11.16 | $34K |
| 2026-01-13 | 2 | $10.50 | $21 |
| 2025-11-20 | 4 | $8.38 | $34 |
| 2025-11-10 | 11 | $8.44 | $93 |
Insider trades
SEC Form 4, newest first. JSONInsiders at ECVT reported 1 open-market buy worth $250K in the last 90 days and no open-market sells. Latest filing: Humble Patti A. (Director) on 2026-09-10.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-09-10 | Humble Patti A. | Director | Buy | 25K | $10.05 | $250K | 34K |
| 2026-08-24 | Bergman Laurie | See Remarks | Grant | 43K | $0.00 | $0 | 43K |
| 2026-06-02 | Lorance Sarah | Director | Sell | 8K | $13.33 | $113K | 55K |
| 2026-05-26 | Humble Patti A. | Director | Grant | 9K | $13.61 | $124K | 9K |
| 2026-03-12 | Bitting Kurt | See Remarks | Exercise or conversion | 38K | $3.04 | $116K | 698K |
| 2026-03-04 | Feehan Michael | See Remarks | Grant | 11K | $11.31 | $125K | 389K |
| 2026-03-04 | Koscinski Joseph S. | See Remarks | Grant | 11K | $11.31 | $125K | 596K |
| 2026-02-03 | Fogarty Kevin Michael | Director | Grant | 39K | $0.00 | $0 | 216K |
| 2026-02-03 | Lorance Sarah | Director | Grant | 19K | $0.00 | $0 | 63K |
| 2026-02-03 | Ward Susan F | Director | Grant | 19K | $0.00 | $0 | 98K |
| 2026-02-03 | Koscinski Joseph S. | See Remarks | Grant | 27K | $0.00 | $0 | 585K |
| 2026-02-03 | Feehan Michael | See Remarks | Grant | 19K | $0.00 | $0 | 378K |
| 2026-02-03 | Feehan Michael | See Remarks | Tax withholding | 5K | $10.31 | $50K | 359K |
| 2026-02-03 | Catalano Anna C | Director | Grant | 19K | $0.00 | $0 | 103K |
| 2026-02-03 | Brown Bryan K. | Director | Grant | 19K | $0.00 | $0 | 109K |
| 2026-02-03 | Bradley David A. | Director | Grant | 19K | $0.00 | $0 | 108K |
| 2026-02-03 | Bitting Kurt | See Remarks | Grant | 116K | $0.00 | $0 | 660K |
| 2026-02-03 | Bitting Kurt | See Remarks | Tax withholding | 26K | $10.31 | $267K | 544K |
| 2026-02-03 | Althoff Donald L. | Director | Grant | 19K | $0.00 | $0 | 58K |
| 2026-01-22 | Feehan Michael | See Remarks | Tax withholding | 4K | $10.84 | $46K | 363K |
| 2026-01-22 | Bitting Kurt | See Remarks | Tax withholding | 16K | $10.84 | $174K | 570K |
| 2026-01-05 | Feehan Michael | See Remarks | Tax withholding | 6K | $9.80 | $61K | 368K |
| 2026-01-05 | Bitting Kurt | See Remarks | Tax withholding | 16K | $9.80 | $158K | 586K |
| 2025-11-07 | Ward Susan F | Director | Sell | 15K | $8.40 | $126K | 78K |
| 2025-02-03 | Catalano Anna C | Director | Grant | 26K | $0.00 | $0 | 83K |
| 2025-02-03 | Fogarty Kevin Michael | Director | Grant | 51K | $0.00 | $0 | 177K |
| 2025-02-03 | Koscinski Joseph S. | See Remarks | Grant | 36K | $0.00 | $0 | 558K |
| 2025-02-03 | Feehan Michael | See Remarks | Grant | 26K | $0.00 | $0 | 374K |
| 2025-02-03 | Brown Bryan K. | Director | Grant | 26K | $0.00 | $0 | 90K |
| 2025-02-03 | Althoff Donald L. | Director | Grant | 26K | $0.00 | $0 | 39K |
| 2025-02-03 | Lorance Sarah | Director | Grant | 26K | $0.00 | $0 | 44K |
| 2025-02-03 | Whittleston Paul | See Remarks | Grant | 23K | $0.00 | $0 | 73K |
| 2025-02-03 | Ward Susan F | Director | Grant | 26K | $0.00 | $0 | 93K |
| 2025-02-03 | Bitting Kurt | See Remarks | Grant | 154K | $0.00 | $0 | 602K |
| 2025-02-03 | Vann George L. Jr. | See Remarks | Grant | 21K | $0.00 | $0 | 70K |
| 2025-02-03 | Bradley David A. | Director | Grant | 26K | $0.00 | $0 | 89K |
| 2025-01-22 | Whittleston Paul | See Remarks | Tax withholding | 3K | $7.96 | $24K | 50K |
| 2025-01-22 | Koscinski Joseph S. | See Remarks | Tax withholding | 6K | $7.96 | $44K | 522K |
| 2025-01-22 | Feehan Michael | See Remarks | Tax withholding | 2K | $7.96 | $19K | 348K |
| 2025-01-22 | Bitting Kurt | See Remarks | Tax withholding | 14K | $7.96 | $114K | 448K |
| 2025-01-22 | Vann George L. Jr. | See Remarks | Tax withholding | 1K | $7.96 | $12K | 49K |
| 2025-01-05 | Koscinski Joseph S. | See Remarks | Tax withholding | 17K | $7.76 | $135K | 527K |
| 2025-01-05 | Vann George L. Jr. | See Remarks | Tax withholding | 4K | $7.76 | $28K | 51K |
| 2025-01-05 | Bitting Kurt | See Remarks | Tax withholding | 27K | $7.76 | $210K | 462K |
| 2025-01-05 | Whittleston Paul | See Remarks | Tax withholding | 5K | $7.76 | $37K | 53K |
| 2025-01-05 | Feehan Michael | See Remarks | Tax withholding | 14K | $7.76 | $110K | 351K |
| 2024-08-07 | Whittleston Paul | See Remarks | Buy | 8K | $6.51 | $51K | 58K |
| 2024-08-05 | Bitting Kurt | See Remarks | Buy | 5K | $6.27 | $31K | 489K |
| 2024-08-05 | Feehan Michael | See Remarks | Buy | 16K | $6.28 | $100K | 365K |
| 2024-08-05 | Koscinski Joseph S. | See Remarks | Buy | 5K | $6.26 | $30K | 545K |
| 2024-05-20 | Althoff Donald L. | Director | Grant | 13K | $0.00 | $0 | 13K |
| 2024-03-22 | Ward Susan F | Director | Sell | 24K | $10.28 | $251K | 68K |
| 2024-03-08 | Lorance Sarah | Director | Grant | 18K | $0.00 | $0 | 18K |
| 2024-01-22 | Catalano Anna C | Director | Grant | 23K | $0.00 | $0 | 58K |
| 2024-01-22 | Coxon Robert | Director | Grant | 23K | $0.00 | $0 | 224K |
| 2024-01-22 | Bitting Kurt | See Remarks | Grant | 99K | $0.00 | $0 | 484K |
| 2024-01-22 | Vann Kyle D | Director | Grant | 23K | $0.00 | $0 | 205K |
| 2024-01-22 | Bradley David A. | Director | Grant | 23K | $0.00 | $0 | 63K |
| 2024-01-22 | Koscinski Joseph S. | See Remarks | Grant | 45K | $0.00 | $0 | 540K |
| 2024-01-22 | Fogarty Kevin Michael | Director | Grant | 45K | $0.00 | $0 | 126K |
| 2024-01-22 | Vann George L. Jr. | See Remarks | Grant | 14K | $0.00 | $0 | 54K |
| 2024-01-22 | Ward Susan F | Director | Grant | 23K | $0.00 | $0 | 92K |
| 2024-01-22 | Feehan Michael | See Remarks | Grant | 23K | $0.00 | $0 | 349K |
| 2024-01-22 | Whittleston Paul | See Remarks | Grant | 20K | $0.00 | $0 | 50K |
| 2024-01-22 | Brown Bryan K. | Director | Grant | 23K | $0.00 | $0 | 64K |
| 2024-01-05 | Bitting Kurt | See Remarks | Tax withholding | 31K | $9.46 | $290K | 385K |
| 2024-01-05 | Feehan Michael | See Remarks | Tax withholding | 15K | $9.46 | $140K | 326K |
| 2024-01-05 | Whittleston Paul | See Remarks | Tax withholding | 4K | $9.46 | $35K | 29K |
| 2024-01-05 | Vann George L. Jr. | See Remarks | Tax withholding | 4K | $9.46 | $34K | 41K |
| 2023-08-23 | Feehan Michael | See Remarks | Buy | 5K | $9.67 | $48K | 341K |
| 2023-08-23 | Bitting Kurt | See Remarks | Buy | 3K | $9.64 | $30K | 416K |
| 2023-07-01 | Vann George L. Jr. | See Remarks | Tax withholding | 4K | $11.37 | $41K | 44K |
| 2023-07-01 | Bitting Kurt | See Remarks | Tax withholding | 63K | $11.37 | $717K | 413K |
| 2023-07-01 | Feehan Michael | See Remarks | Tax withholding | 75K | $11.37 | $853K | 336K |
| 2023-07-01 | Koscinski Joseph S. | See Remarks | Tax withholding | 53K | $11.37 | $601K | 494K |
| 2023-05-26 | RATCLIFFE JAMES A | Other | Sell | 14.0M | $10.88 | $152.3M | 10.7M |
| 2023-03-08 | Koscinski Joseph S. | See Remarks | Grant | 12K | $0.00 | $0 | 547K |
| 2023-03-08 | Bitting Kurt | See Remarks | Tax withholding | 1K | $10.72 | $15K | 476K |
| 2023-03-08 | Bitting Kurt | See Remarks | Grant | 12K | $0.00 | $0 | 477K |
| 2023-03-08 | Feehan Michael | See Remarks | Grant | 3K | $0.00 | $0 | 411K |
| 2023-03-07 | CCMP Capital, LP | TenPercentOwner | Sell | 123K | $9.95 | $1.2M | 0 |
| 2023-03-07 | CCMP Capital, LP | TenPercentOwner | Sell | 1.9M | $9.95 | $18.7M | 0 |
| 2023-03-07 | CCMP Capital, LP | TenPercentOwner | Sell | 94K | $9.95 | $935K | 0 |
| 2023-03-07 | CCMP Capital, LP | TenPercentOwner | Sell | 1.7M | $9.95 | $16.5M | 0 |
| 2023-03-07 | CCMP Capital, LP | TenPercentOwner | Sell | 552K | $9.95 | $5.5M | 0 |
| 2023-03-07 | CCMP Capital, LP | TenPercentOwner | Sell | 5.4M | $9.95 | $54.2M | 0 |
| 2023-03-07 | CCMP Capital, LP | TenPercentOwner | Sell | 1.7M | $9.95 | $17.3M | 0 |
| 2023-03-07 | Quartz Co-Invest, L.P. | TenPercentOwner | Sell | 94K | $9.95 | $935K | 0 |
| 2023-03-07 | Quartz Co-Invest, L.P. | TenPercentOwner | Sell | 1.9M | $9.95 | $18.7M | 0 |
| 2023-03-07 | Quartz Co-Invest, L.P. | TenPercentOwner | Sell | 123K | $9.95 | $1.2M | 0 |
| 2023-03-07 | Quartz Co-Invest, L.P. | TenPercentOwner | Sell | 1.7M | $9.95 | $16.5M | 0 |
| 2023-03-07 | Quartz Co-Invest, L.P. | TenPercentOwner | Sell | 552K | $9.95 | $5.5M | 0 |
| 2023-03-07 | Quartz Co-Invest, L.P. | TenPercentOwner | Sell | 5.4M | $9.95 | $54.2M | 0 |
| 2023-03-07 | Quartz Co-Invest, L.P. | TenPercentOwner | Sell | 1.7M | $9.95 | $17.3M | 0 |
| 2023-03-07 | Coxon Robert | Director | Returned to company | 25K | $0.00 | $0 | 201K |
| 2023-03-07 | Feehan Michael | See Remarks | Returned to company | 14K | $0.00 | $0 | 408K |
| 2023-03-03 | Vann Kyle D | Director | Buy | 10K | $11.02 | $110K | 182K |
| 2023-01-20 | Bitting Kurt | See Remarks | Tax withholding | 714 | $10.16 | $7K | 465K |
| 2023-01-16 | Catalano Anna C | Director | Grant | 20K | $0.00 | $0 | 35K |
| 2023-01-16 | Ward Susan F | Director | Grant | 2K | $0.00 | $0 | 69K |
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. JSON3 Form 144 notices on file for ECVT worth $624K at the prices reported; 0 in the last 90 days worth $0. Latest: Susan Ward filed on 2026-07-17 to sell 29,886 shares ($386K) from 2026-07-17.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-07-17 | Susan WardDirector | 30K | $386K | 0.027% | 2026-07-17 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-06-02 | SARAH J LORANCEDirector | 8K | $113K | 0.008% | 2026-06-02 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-11-07 | Susan WardDirector | 15K | $126K | 0.013% | 2025-11-07 | Morgan Stanley Smith Barney LLC Executive Financial Services |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON6 holders report 5% or more of ECVT in their latest filing, all on Schedule 13G (passive). The largest reported stake is Rubric Capital Management LP at 9.1% of the class (10,400,000 shares), filed 2025-11-14 for an event on 2025-09-30.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-07-31 | 13G | Vanguard Portfolio Managementinvestment adviser | 6.2M | 5.7% | 2026-06-30 |
| 2026-07-14 | 13G/Ano. 1 | Dimensional Fund Advisors LPinvestment adviser | 6.6M | 6.0% | 2026-06-30 |
| 2026-05-08 | 13G/Ano. 4 | Hotchkis and Wiley Capital Management, LLCinvestment adviser | 5.4M | 4.9% | 2026-03-31 |
| 2026-04-29 | 13G | Vanguard Capital Managementinvestment adviser | 5.8M | 5.3% | 2026-03-31 |
| 2026-04-24 | 13G/Ano. 2 | BlackRock, Inc.parent holding company | 8.5M | 7.7% | 2026-03-31 |
| 2026-03-26 | 13G/Ano. 2 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
| 2025-11-14 | 13G | Rubric Capital Management LPinvestment adviser, partnership | 10.4M | 9.1% | 2025-09-30 |
| 2025-11-14 | 13G | David Rosenparent holding company, individual | 10.4M | 9.1% | 2025-09-30 |
13F holders
Tracked managers holding ECVT at their latest 13F. JSON7 of the 30 tracked managers held ECVT at their latest 13F, $20.2M in total at quarter-end prices. Citadel Advisors is the largest at $5.5M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 2 added shares and 5 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Citadel Advisors | 2026-06-30 | 440K | $5.5M | 0.00% | -210K |
| D. E. Shaw & Co. | 2026-06-30 | 352K | $4.4M | 0.00% | -71K |
| Two Sigma Investments | 2026-06-30 | 330K | $4.1M | 0.00% | +92K |
| Renaissance Technologies | 2026-06-30 | 213K | $2.7M | 0.00% | -94K |
| AQR Capital Management | 2026-06-30 | 139K | $1.7M | 0.00% | +49K |
| Point72 Asset Management | 2026-06-30 | 87K | $1.1M | 0.00% | -962K |
| Millennium Management | 2026-06-30 | 59K | $738K | 0.00% | -70K |
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
Ecovyst 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 Ecovyst (ECVT), SEC CIK 1708035, listed on NYSE, classified by the SEC as chemicals & allied products. 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 2026-09-30.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-10-23.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-08-27.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 2026-07-17.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 2026-07-31.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 2026-09-10.JSON and CSV
- Company record
- EDGAR filing index for CIK 1708035Ticker, 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.
Other companies the SEC classifies as chemicals & allied products
Other company pages
Datasets
Frequently Asked Questions
How much of ECVT is sold short?
5,939,201 shares were held short at the 2026-09-30 settlement, 4.4 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 ECVT's daily short volume?
On 2026-10-23, 242,655 of the 363,995 ECVT shares reported to FINRA were sold short, 66.7% of the day's reported volume. Short volume is a flow for one day, not a position.
Does ECVT have fails to deliver?
The SEC's latest file shows 252 ECVT shares failed to deliver at settlement 2026-08-27. Fails are reported per settlement date and published twice a month with a lag.
Are ECVT insiders buying or selling?
Insiders at ECVT reported 1 open-market buy worth $250K in the last 90 days and no open-market sells. Latest filing: Humble Patti A. (Director) on 2026-09-10.
Have ECVT insiders filed to sell?
3 Form 144 notices on file for ECVT worth $624K at the prices reported; 0 in the last 90 days worth $0. Latest: Susan Ward filed on 2026-07-17 to sell 29,886 shares ($386K) from 2026-07-17.
Who owns 5% or more of ECVT?
6 holders report 5% or more of ECVT in their latest filing, all on Schedule 13G (passive). The largest reported stake is Rubric Capital Management LP at 9.1% of the class (10,400,000 shares), filed 2025-11-14 for an event on 2025-09-30.
Which tracked 13F managers own ECVT?
7 of the 30 tracked 13F managers held ECVT shares at their latest filing, $20.2M in all. The largest: Ken Griffin's Citadel Advisors (440K shares, $5.5M), D. E. Shaw & Co. (352K shares, $4.4M), Two Sigma Investments (330K shares, $4.1M), Renaissance Technologies (213K shares, $2.7M), Cliff Asness's AQR Capital Management (139K shares, $1.7M), Steve Cohen's Point72 Asset Management (87K shares, $1.1M). 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.