electroCore (ECOR)
electroCore on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as electromedical & electrotherapeutic apparatus.
348K
Short interest
settlement 2026-10-15
4.4
Days to cover
+1.3 days vs prior
45.5%
Short share of volume
2026-11-02
260
Fails to deliver
settlement 2026-10-13
Wed 4 Nov
Next earnings
estimated date
-$102K
Insider flow, 90 days
2 buys, 3 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 ECOR is 347,679 shares, up 25,308 shares over the last month. Over the last 48 readings it ranged from 42,996 shares (31 October 2024) to 451,689 shares (29 August 2025). At the reported average volume of 79K shares a day that is 4.4 days to cover.
Embed this chart.The embed keeps its attribution line.
<iframe src="https://xoomar.com/embed/stocks/ecor" width="100%" height="440" style="border:0;max-width:100%" loading="lazy" title="XOOMAR chart"></iframe>
| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 347,679 | +10.6% | 78,969 | 4.40 |
| 2026-09-30 | 314,260 | -2.5% | 102,433 | 3.07 |
| 2026-09-15 | 322,371 | -1.0% | 59,577 | 5.41 |
| 2026-08-31 | 325,612 | +1.0% | 88,508 | 3.68 |
| 2026-08-14 | 322,419 | -8.1% | 121,105 | 2.66 |
| 2026-07-31 | 350,701 | -4.6% | 46,141 | 7.60 |
| 2026-07-15 | 367,579 | +80.0% | 106,502 | 3.45 |
| 2026-06-30 | 204,261 | -1.4% | 84,354 | 2.42 |
| 2026-06-15 | 207,168 | -26.1% | 159,530 | 1.30 |
| 2026-05-29 | 280,333 | -3.2% | 196,442 | 1.43 |
| 2026-05-15 | 289,666 | -13.5% | 71,372 | 4.06 |
| 2026-04-30 | 334,857 | -1.9% | 40,056 | 8.36 |
| 2026-04-15 | 341,291 | +16.9% | 96,508 | 3.54 |
| 2026-03-31 | 291,996 | +11.3% | 69,621 | 4.19 |
| 2026-03-13 | 262,469 | +0.4% | 50,546 | 5.19 |
| 2026-02-27 | 261,497 | -1.2% | 49,489 | 5.28 |
| 2026-02-13 | 264,654 | -2.0% | 38,382 | 6.90 |
| 2026-01-30 | 270,001 | -3.4% | 103,801 | 2.60 |
| 2026-01-15 | 279,360 | +4.3% | 84,781 | 3.30 |
| 2025-12-31 | 267,837 | +2.1% | 49,674 | 5.39 |
| 2025-12-15 | 262,267 | -6.6% | 29,150 | 9.00 |
| 2025-11-28 | 280,850 | +0.8% | 36,196 | 7.76 |
| 2025-11-14 | 278,634 | -23.2% | 122,204 | 2.28 |
| 2025-10-31 | 362,958 | -0.7% | 34,074 | 10.65 |
| 2025-10-15 | 365,507 | -10.7% | 49,823 | 7.34 |
| 2025-09-30 | 409,209 | -6.5% | 41,171 | 9.94 |
| 2025-09-15 | 437,504 | -3.1% | 53,326 | 8.20 |
| 2025-08-29 | 451,689 | +4.8% | 71,295 | 6.34 |
| 2025-08-15 | 430,990 | +5.9% | 170,976 | 2.52 |
| 2025-07-31 | 406,959 | +0.3% | 54,788 | 7.43 |
| 2025-07-15 | 405,625 | +12.8% | 182,676 | 2.22 |
| 2025-06-30 | 359,586 | -6.6% | 63,965 | 5.62 |
| 2025-06-13 | 385,001 | -1.8% | 76,346 | 5.04 |
| 2025-05-30 | 391,992 | +5.6% | 136,464 | 2.87 |
| 2025-05-15 | 371,175 | +23.1% | 209,258 | 1.77 |
| 2025-04-30 | 301,558 | -0.1% | 92,243 | 3.27 |
| 2025-04-15 | 301,983 | +15.2% | 114,979 | 2.63 |
| 2025-03-31 | 262,078 | -9.0% | 188,149 | 1.39 |
| 2025-03-14 | 288,107 | +137.0% | 248,000 | 1.16 |
| 2025-02-28 | 121,568 | +2.1% | 187,831 | 1.00 |
| 2025-02-14 | 119,060 | +0.4% | 73,951 | 1.61 |
| 2025-01-31 | 118,564 | +34.4% | 101,128 | 1.17 |
| 2025-01-15 | 88,233 | -1.4% | 93,155 | 1.00 |
| 2024-12-31 | 89,450 | -22.8% | 172,815 | 1.00 |
| 2024-12-13 | 115,879 | +72.9% | 119,936 | 1.00 |
| 2024-11-29 | 67,008 | +13.7% | 98,013 | 1.00 |
| 2024-11-15 | 58,941 | +37.1% | 161,958 | 1.00 |
| 2024-10-31 | 42,996 | +64.2% | 121,748 | 1.00 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 2 November 2026, the short share of ECOR volume is 45.5%, up 3.5 points over the last five sessions. Over the last 30 readings it ranged from 27.2% (19 October 2026) to 68.1% (9 October 2026). The latest reading is in line with the 30-session average of 46.2%, on 34K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-11-02 | 15K | 34K | 45.5% | 0 |
| 2026-10-30 | 12K | 32K | 36.8% | 0 |
| 2026-10-29 | 11K | 20K | 53.6% | 0 |
| 2026-10-28 | 11K | 20K | 57.6% | 0 |
| 2026-10-27 | 7K | 16K | 43.1% | 0 |
| 2026-10-26 | 11K | 26K | 42.0% | 0 |
| 2026-10-23 | 27K | 59K | 45.7% | 0 |
| 2026-10-22 | 6K | 10K | 54.0% | 0 |
| 2026-10-21 | 10K | 22K | 44.0% | 0 |
| 2026-10-20 | 8K | 26K | 31.2% | 0 |
| 2026-10-19 | 9K | 34K | 27.2% | 1,164 |
| 2026-10-16 | 15K | 28K | 53.7% | 41 |
| 2026-10-15 | 12K | 40K | 29.8% | 0 |
| 2026-10-14 | 26K | 51K | 50.4% | 1,699 |
| 2026-10-13 | 31K | 77K | 40.0% | 6,574 |
| 2026-10-12 | 10K | 21K | 47.0% | 620 |
| 2026-10-09 | 8K | 11K | 68.1% | 0 |
| 2026-10-08 | 8K | 16K | 52.2% | 0 |
| 2026-10-07 | 17K | 28K | 60.1% | 0 |
| 2026-10-06 | 10K | 18K | 56.8% | 0 |
| 2026-10-05 | 9K | 16K | 54.8% | 0 |
| 2026-10-02 | 23K | 66K | 35.3% | 0 |
| 2026-10-01 | 11K | 37K | 31.0% | 0 |
| 2026-09-30 | 8K | 27K | 29.0% | 0 |
| 2026-09-29 | 16K | 34K | 46.3% | 0 |
| 2026-09-28 | 20K | 51K | 38.5% | 1,114 |
| 2026-09-25 | 11K | 24K | 44.8% | 0 |
| 2026-09-24 | 17K | 29K | 59.6% | 0 |
| 2026-09-23 | 21K | 50K | 41.5% | 0 |
| 2026-09-22 | 35K | 52K | 66.3% | 0 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 13 October 2026, the fails-to-deliver balance in ECOR is 260 shares, down 1,268 shares over the last settlement date. Over the last 30 readings it ranged from 41 shares (24 June 2026) to 39,247 shares (1 June 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-10-13 | 260 | $9.28 | $2K |
| 2026-10-09 | 1,528 | $9.51 | $15K |
| 2026-10-08 | 1,393 | $9.72 | $14K |
| 2026-10-01 | 1,000 | $10.82 | $11K |
| 2026-09-16 | 1,489 | $10.05 | $15K |
| 2026-08-14 | 970 | $9.94 | $10K |
| 2026-08-13 | 3,317 | $9.40 | $31K |
| 2026-08-06 | 165 | $6.53 | $1K |
| 2026-08-04 | 205 | $6.09 | $1K |
| 2026-08-03 | 966 | $6.09 | $6K |
| 2026-07-21 | 447 | $6.07 | $3K |
| 2026-07-15 | 1,995 | $6.15 | $12K |
| 2026-07-07 | 264 | $8.28 | $2K |
| 2026-07-01 | 875 | $8.64 | $8K |
| 2026-06-30 | 5,880 | $8.12 | $48K |
| 2026-06-26 | 248 | $7.19 | $2K |
| 2026-06-25 | 251 | $7.57 | $2K |
| 2026-06-24 | 41 | $8.35 | $342 |
| 2026-06-22 | 2,418 | $8.43 | $20K |
| 2026-06-15 | 18,503 | $10.25 | $190K |
| 2026-06-10 | 412 | $9.52 | $4K |
| 2026-06-05 | 23,881 | $9.94 | $237K |
| 2026-06-01 | 39,247 | $9.76 | $383K |
| 2026-05-27 | 2,745 | $8.91 | $24K |
| 2026-05-19 | 1,215 | $5.86 | $7K |
| 2026-05-18 | 5,622 | $6.27 | $35K |
| 2026-05-06 | 65 | $6.99 | $454 |
| 2026-04-28 | 614 | $6.07 | $4K |
| 2026-04-24 | 136 | $6.18 | $840 |
| 2026-04-23 | 1,036 | $6.12 | $6K |
Insider trades
SEC Form 4, newest first. JSONOver the last 90 days ECOR insiders reported 2 open-market buys ($98K) against 3 sells ($200K), so the dollar flow leans toward selling. Latest filing: Errico Thomas J. (Director) on 2026-09-14.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-09-14 | Errico Thomas J. | Director | Buy | 5K | $9.82 | $49K | 364K |
| 2026-09-11 | Fox Michael | See Remarks | Grant | 5K | $9.80 | $49K | 130K |
| 2026-09-09 | Wilber Patricia | Director | Grant | 11K | $0.00 | $0 | 83K |
| 2026-09-09 | Theofilos James Charles | Director | Grant | 11K | $0.00 | $0 | 35K |
| 2026-09-09 | Goldstein Julie Ann | Director | Grant | 11K | $0.00 | $0 | 113K |
| 2026-09-09 | GANDOLFO JOHN P | Director | Grant | 11K | $0.00 | $0 | 99K |
| 2026-09-09 | Errico Thomas J. | Director | Grant | 16K | $0.00 | $0 | 359K |
| 2026-09-09 | Bonfiglioli Elena | Director | Grant | 11K | $0.00 | $0 | 42K |
| 2026-09-08 | Lev Joshua S. | See Remarks | Grant | 55K | $0.00 | $0 | 140K |
| 2026-09-08 | Fox Michael | See Remarks | Grant | 55K | $0.00 | $0 | 125K |
| 2026-08-25 | Lev Joshua S. | CFO and Interim President | Sell | 3K | $9.36 | $28K | 85K |
| 2026-08-25 | Lev Joshua S. | CFO and Interim President | Exercise or conversion | 3K | $4.50 | $14K | 88K |
| 2026-08-24 | Lev Joshua S. | CFO and Interim President | Sell | 5K | $9.88 | $49K | 85K |
| 2026-08-24 | Lev Joshua S. | CFO and Interim President | Exercise or conversion | 5K | $4.50 | $23K | 90K |
| 2026-08-21 | Lev Joshua S. | CFO and Interim President | Sell | 12K | $10.22 | $123K | 85K |
| 2026-08-21 | Lev Joshua S. | CFO and Interim President | Exercise or conversion | 12K | $4.50 | $54K | 97K |
| 2026-08-13 | Errico Thomas J. | Director | Buy | 5K | $9.85 | $49K | 343K |
| 2026-05-28 | Lev Joshua S. | CFO and Interim President | Sell | 7K | $9.00 | $60K | 85K |
| 2026-05-22 | Lev Joshua S. | CFO and Interim President | Sell | 3K | $6.50 | $20K | 92K |
| 2026-05-21 | Errico Thomas J. | Director | Buy | 10K | $5.99 | $60K | 360K |
| 2026-05-20 | Errico Thomas J. | Director | Small acquisition | 8 | $5.98 | $48 | 350K |
| 2026-04-23 | Goldberger Daniel S | Other | Sell | 80K | $6.80 | $544K | 211K |
| 2026-04-13 | Fox Michael | Chief Operating Officer | Grant | 70K | $0.00 | $0 | 70K |
| 2026-04-10 | Goldberger Daniel S | Former Officer and Director | Sell | 16K | $6.02 | $97K | 291K |
| 2026-04-01 | Lev Joshua S. | CFO and Interim President | Grant | 45K | $0.00 | $0 | 95K |
| 2026-03-19 | Errico Thomas J. | Director | Exercise (in or at the money) | 19K | $6.43 | $124K | 350K |
| 2026-03-19 | Errico Thomas J. | Director | Exercise (in or at the money) | 23K | $4.35 | $99K | 331K |
| 2026-01-26 | Lev Joshua S. | Chief Financial Officer | Grant | 25K | $0.00 | $0 | 50K |
| 2026-01-26 | Lev Joshua S. | Chief Financial Officer | Grant | 3K | $0.00 | $0 | 25K |
| 2026-01-26 | Goldberger Daniel S | Chief Executive Officer | Grant | 26K | $0.00 | $0 | 339K |
| 2026-01-26 | Goldberger Daniel S | Chief Executive Officer | Grant | 20K | $7.47 | $152K | 313K |
| 2025-12-04 | Lev Joshua S. | Chief Financial Officer | Sell | 3K | $5.05 | $13K | 22K |
| 2025-12-02 | Goldberger Daniel S | Chief Executive Officer | Buy | 1K | $4.84 | $5K | 293K |
| 2025-11-12 | Lev Joshua S. | Chief Financial Officer | Sell | 2K | $6.18 | $13K | 24K |
| 2025-09-10 | Bonfiglioli Elena | Director | Grant | 31K | $0.00 | $0 | 31K |
| 2025-09-02 | Wilber Patricia | Director | Grant | 19K | $0.00 | $0 | 72K |
| 2025-09-02 | PATTON THOMAS M | Director | Grant | 19K | $0.00 | $0 | 103K |
| 2025-09-02 | Goldstein Julie Ann | Director | Grant | 19K | $0.00 | $0 | 101K |
| 2025-09-02 | GANDOLFO JOHN P | Director | Grant | 19K | $0.00 | $0 | 88K |
| 2025-09-02 | Errico Thomas J. | Director | Grant | 27K | $0.00 | $0 | 308K |
| 2025-08-11 | Goldberger Daniel S | Chief Executive Officer | Buy | 1K | $4.23 | $4K | 292K |
| 2025-08-11 | Errico Thomas J. | Director | Buy | 15K | $4.47 | $67K | 281K |
| 2025-08-01 | Theofilos James Charles | Director | Grant | 22K | $0.00 | $0 | 24K |
| 2025-05-23 | GANDOLFO JOHN P | Director | Buy | 2K | $5.01 | $9K | 69K |
| 2025-05-12 | Errico Thomas J. | Director | Buy | 10K | $4.77 | $48K | 266K |
| 2025-03-17 | Errico Thomas J. | Director | Buy | 6K | $8.10 | $49K | 256K |
| 2025-03-17 | Goldberger Daniel S | Chief Executive Officer | Buy | 1K | $8.59 | $9K | 291K |
| 2025-01-18 | Goldberger Daniel S | Chief Executive Officer | Grant | 40K | $0.00 | $0 | 290K |
| 2025-01-15 | Lev Joshua S. | Chief Financial Officer | Grant | 10K | $0.00 | $0 | 26K |
| 2024-09-03 | Theofilos Charles Steve | Director | Grant | 17K | $0.00 | $0 | 454K |
| 2024-09-03 | PATTON THOMAS M | Director | Grant | 17K | $0.00 | $0 | 84K |
| 2024-09-03 | GANDOLFO JOHN P | Director | Grant | 17K | $0.00 | $0 | 67K |
| 2024-09-03 | Wilber Patricia | Director | Grant | 17K | $0.00 | $0 | 50K |
| 2024-09-03 | Errico Thomas J. | Director | Grant | 17K | $0.00 | $0 | 250K |
| 2024-08-15 | Errico Thomas J. | Director | Buy | 5K | $6.12 | $31K | 234K |
| 2024-06-13 | GANDOLFO JOHN P | Director | Buy | 1K | $6.43 | $6K | 51K |
| 2024-06-05 | Goldberger Daniel S | Chief Executive Officer | Buy | 39K | $6.43 | $248K | 250K |
| 2024-06-05 | PATTON THOMAS M | Director | Grant | 8K | $6.43 | $50K | 67K |
| 2024-06-05 | Goldstein Julie Ann | Director | Grant | 8K | $6.43 | $50K | 77K |
| 2024-06-05 | Wilber Patricia | Director | Grant | 7K | $6.43 | $45K | 33K |
| 2024-06-05 | Errico Thomas J. | Director | Grant | 39K | $6.43 | $248K | 229K |
| 2024-01-16 | Goldberger Daniel S | Chief Executive Officer | Grant | 75K | $0.00 | $0 | 211K |
| 2024-01-12 | POSNER BRIAN M | Chief Financial Officer | Buy | 16K | $0.00 | $0 | 22K |
| 2024-01-01 | Theofilos Charles Steve | Director | Grant | 25K | $0.00 | $0 | 438K |
| 2023-09-15 | Goldberger Daniel S | Chief Executive Officer | Buy | 2K | $5.56 | $8K | 136K |
| 2023-08-04 | Goldberger Daniel S | Chief Executive Officer | Buy | 50K | $0.00 | $0 | 135K |
| 2023-08-04 | GANDOLFO JOHN P | Director | Grant | 22K | $0.00 | $0 | 50K |
| 2023-08-04 | PATTON THOMAS M | Director | Grant | 22K | $0.00 | $0 | 59K |
| 2023-08-04 | Errico Thomas J. | Director | Grant | 22K | $0.00 | $0 | 190K |
| 2023-08-02 | Goldberger Daniel S | Chief Executive Officer | Buy | 51K | $4.35 | $222K | 85K |
| 2023-08-02 | Errico Thomas J. | Director | Grant | 46K | $4.35 | $198K | 168K |
| 2023-08-02 | PATTON THOMAS M | Director | Grant | 11K | $4.35 | $48K | 38K |
| 2023-08-02 | CUNEO F PETER | Director | Grant | 6K | $4.35 | $25K | 6K |
| 2023-08-02 | Goldstein Julie Ann | Director | Grant | 34K | $4.35 | $148K | 70K |
| 2023-08-02 | Moody Trevor J | Director | Grant | 23K | $4.35 | $99K | 68K |
| 2023-08-02 | Wilber Patricia | Director | Grant | 22K | $0.00 | $0 | 26K |
| 2023-03-17 | Goldberger Daniel S | Chief Executive Officer | Buy | 500 | $3.43 | $2K | 34K |
| 2023-03-16 | Goldberger Daniel S | Chief Executive Officer | Buy | 500 | $3.46 | $2K | 33K |
| 2023-03-15 | Goldberger Daniel S | Chief Executive Officer | Buy | 500 | $3.55 | $2K | 468K |
| 2023-03-14 | Goldberger Daniel S | Chief Executive Officer | Buy | 500 | $3.73 | $2K | 467K |
| 2023-03-13 | Goldberger Daniel S | Chief Executive Officer | Buy | 500 | $3.86 | $2K | 467K |
| 2023-03-13 | Errico Thomas J. | Director | Grant | 7K | $3.61 | $24K | 122K |
| 2022-12-14 | Goldberger Daniel S | Chief Executive Officer | Buy | 5K | $0.35 | $2K | 466K |
| 2022-12-13 | Goldberger Daniel S | Chief Executive Officer | Buy | 5K | $0.33 | $2K | 461K |
| 2022-12-13 | Errico Joseph P | Director | Buy | 100K | $0.33 | $33K | 2.7M |
| 2022-12-12 | Goldberger Daniel S | Chief Executive Officer | Buy | 5K | $0.32 | $2K | 456K |
| 2022-12-09 | Goldberger Daniel S | Chief Executive Officer | Buy | 5K | $0.30 | $2K | 451K |
| 2022-12-08 | Goldberger Daniel S | Chief Executive Officer | Buy | 10K | $0.28 | $3K | 446K |
| 2022-12-02 | Moody Trevor J | Director | Grant | 206K | $0.00 | $0 | 674K |
| 2022-12-02 | GANDOLFO JOHN P | Director | Grant | 206K | $0.00 | $0 | 419K |
| 2022-12-02 | PATTON THOMAS M | Director | Grant | 206K | $0.00 | $0 | 400K |
| 2022-12-02 | Errico Joseph P | Director | Grant | 206K | $0.00 | $0 | 2.6M |
| 2022-12-02 | Errico Thomas J. | Director | Grant | 206K | $0.00 | $0 | 1.7M |
| 2022-11-29 | Errico Joseph P | Director | Buy | 25K | $0.33 | $8K | 2.4M |
| 2022-11-25 | Errico Joseph P | Director | Buy | 50K | $0.31 | $16K | 2.4M |
| 2022-11-23 | Errico Joseph P | Director | Buy | 100K | $0.31 | $31K | 2.3M |
| 2022-11-22 | Errico Joseph P | Director | Buy | 75K | $0.33 | $25K | 2.2M |
| 2022-11-17 | Errico Joseph P | Director | Buy | 100K | $0.31 | $31K | 2.2M |
| 2022-11-16 | Errico Joseph P | Director | Buy | 100K | $0.29 | $29K | 2.1M |
| 2022-11-14 | Errico Joseph P | Director | Buy | 100K | $0.24 | $24K | 2.0M |
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. JSON5 Form 144 notices on file for ECOR worth $1.2M at the prices reported; 0 in the last 90 days worth $0. Latest: PATTON THOMAS M filed on 2026-05-27 to sell 85,000 shares ($616K) from 2026-05-22.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-05-27 | PATTON THOMAS MDirector | 85K | $616K | 1.025% | 2026-05-22 | Fidelity Brokerage Services LLC |
| 2026-05-27 | Joshua S. LevInterim President and Chief Financial Officer | 7K | $59K | 0.080% | 2026-05-27 | Shareworks by Morgan Stanley |
| 2026-05-14 | Goldberger Daniel SFormer Affiliate | 45K | $292K | 0.542% | 2026-05-14 | Charles Schwab & Co |
| 2026-05-05 | Goldberger Daniel SFormer Affiliate | 25K | $168K | 0.309% | 2026-05-05 | Charles Schwab Corp. |
| 2026-04-23 | Goldberger Daniel SFormer CEO | 10K | $61K | 0.124% | 2026-04-23 | Charles Schwab Corp. |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON6 holders report 5% or more of ECOR in their latest filing, all on Schedule 13G (passive). The largest reported stake is Theofilos Charles Steve at 9.9% of the class (938,523 shares), filed 2026-08-13 for an event on 2026-06-30.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-08-13 | 13G/Ano. 3 | Theofilos Charles Steveindividual | 939K | 9.9% | 2026-06-30 |
| 2026-08-13 | 13G/Ano. 3 | Kathryn Theofilosindividual | 939K | 9.9% | 2026-06-30 |
| 2026-08-13 | 13G/Ano. 3 | Happy Holstein Management, LLC | 528K | 5.9% | 2026-06-30 |
| 2026-05-05 | 13G | Hilve Holdings Ltdcorporation | 518K | 6.4% | 2026-03-31 |
| 2026-05-05 | 13G | Mikhail Stiskinindividual | 518K | 6.4% | 2026-03-31 |
| 2025-11-13 | 13G/Ano. 3 | AWM Investment Company, Inc.investment adviser | 509K | 6.0% | 2025-09-30 |
13F holders
Tracked managers holding ECOR at their latest 13F. JSON2 of the 30 tracked managers held ECOR at their latest 13F, $550K in total at quarter-end prices. Citadel Advisors is the largest at $378K (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 1 added shares and 1 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Citadel Advisors | 2026-06-30 | 44K | $378K | 0.00% | new |
| Renaissance Technologies | 2026-06-30 | 20K | $172K | 0.00% | -25K |
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
electroCore 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 electroCore (ECOR), SEC CIK 1560258, listed on Nasdaq, classified by the SEC as electromedical & electrotherapeutic apparatus. 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 2026-10-13.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 2026-05-27.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 2026-08-13.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 2026-08-06.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 2026-09-14.JSON and CSV
- Company record
- EDGAR filing index for CIK 1560258Ticker, 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 ECOR is sold short?
347,679 shares were held short at the 2026-10-15 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 ECOR's daily short volume?
On 2026-11-02, 15,341 of the 33,726 ECOR shares reported to FINRA were sold short, 45.5% of the day's reported volume. Short volume is a flow for one day, not a position.
Does ECOR have fails to deliver?
The SEC's latest file shows 260 ECOR shares failed to deliver at settlement 2026-10-13. Fails are reported per settlement date and published twice a month with a lag.
Are ECOR insiders buying or selling?
Over the last 90 days ECOR insiders reported 2 open-market buys ($98K) against 3 sells ($200K), so the dollar flow leans toward selling. Latest filing: Errico Thomas J. (Director) on 2026-09-14.
Have ECOR insiders filed to sell?
5 Form 144 notices on file for ECOR worth $1.2M at the prices reported; 0 in the last 90 days worth $0. Latest: PATTON THOMAS M filed on 2026-05-27 to sell 85,000 shares ($616K) from 2026-05-22.
Who owns 5% or more of ECOR?
6 holders report 5% or more of ECOR in their latest filing, all on Schedule 13G (passive). The largest reported stake is Theofilos Charles Steve at 9.9% of the class (938,523 shares), filed 2026-08-13 for an event on 2026-06-30.
Which tracked 13F managers own ECOR?
2 of the 30 tracked 13F managers held ECOR shares at their latest filing, $550K in all. The largest: Ken Griffin's Citadel Advisors (44K shares, $378K), Renaissance Technologies (20K shares, $172K).
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.