Main Street Capital (MAIN)
Main Street Capital on one page: short interest, daily short volume, fails to deliver, planned sales, 13F holders, earnings dates and insider trades. Listed on NYSE.
9.6M
Short interest
settlement 2026-09-30
20.1
Days to cover
-0.9 days vs prior
50.2%
Short share of volume
2026-10-23
18,436
Fails to deliver
settlement 2026-09-30
Thu 7 Jan
Next earnings
estimated date
-$1.9M
Insider flow, 90 days
2 buys, 1 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 MAIN is 9,560,436 shares, up 122,217 shares over the last month. Over the last 48 readings it ranged from 3,291,413 shares (28 February 2025) to 9,919,273 shares (15 July 2026). The latest reading sits at the top of that range. At the reported average volume of 476K shares a day that is 20.1 days to cover.
Embed this chart.The embed keeps its attribution line.
<iframe src="https://xoomar.com/embed/stocks/main" 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 |
|---|---|---|---|---|
| 2026-09-30 | 9,560,436 | +2.0% | 476,366 | 20.07 |
| 2026-09-15 | 9,374,088 | -0.7% | 447,054 | 20.97 |
| 2026-08-31 | 9,438,219 | +0.2% | 408,024 | 23.13 |
| 2026-08-14 | 9,418,810 | -0.3% | 734,977 | 12.82 |
| 2026-07-31 | 9,448,175 | -4.8% | 570,287 | 16.57 |
| 2026-07-15 | 9,919,273 | +2.6% | 660,430 | 15.02 |
| 2026-06-30 | 9,666,062 | -0.2% | 727,872 | 13.28 |
| 2026-06-15 | 9,689,235 | +1.0% | 628,092 | 15.43 |
| 2026-05-29 | 9,591,513 | +0.8% | 752,010 | 12.75 |
| 2026-05-15 | 9,511,507 | +4.1% | 839,147 | 11.33 |
| 2026-04-30 | 9,135,848 | +3.7% | 668,335 | 13.67 |
| 2026-04-15 | 8,806,474 | +6.7% | 695,919 | 12.65 |
| 2026-03-31 | 8,252,432 | +6.5% | 1,100,049 | 7.50 |
| 2026-03-13 | 7,751,757 | +11.7% | 876,402 | 8.84 |
| 2026-02-27 | 6,942,697 | +4.8% | 700,546 | 9.91 |
| 2026-02-13 | 6,622,051 | +8.6% | 637,806 | 10.38 |
| 2026-01-30 | 6,095,382 | +0.4% | 395,064 | 15.43 |
| 2026-01-15 | 6,072,914 | +2.5% | 564,031 | 10.77 |
| 2025-12-31 | 5,926,744 | -2.6% | 637,253 | 9.30 |
| 2025-12-15 | 6,082,442 | -3.0% | 479,758 | 12.68 |
| 2025-11-28 | 6,273,288 | +5.8% | 458,684 | 13.68 |
| 2025-11-14 | 5,928,624 | +9.2% | 494,101 | 12.00 |
| 2025-10-31 | 5,430,385 | +5.6% | 489,793 | 11.09 |
| 2025-10-15 | 5,141,849 | +0.8% | 845,409 | 6.08 |
| 2025-09-30 | 5,102,486 | +2.2% | 662,308 | 7.70 |
| 2025-09-15 | 4,991,341 | +0.8% | 493,779 | 10.11 |
| 2025-08-29 | 4,952,107 | -6.8% | 505,230 | 9.80 |
| 2025-08-15 | 5,315,378 | +0.2% | 538,177 | 9.88 |
| 2025-07-31 | 5,304,718 | +5.8% | 458,570 | 11.57 |
| 2025-07-15 | 5,015,784 | +3.1% | 479,355 | 10.46 |
| 2025-06-30 | 4,866,196 | -6.0% | 440,703 | 11.04 |
| 2025-06-13 | 5,175,683 | +5.7% | 462,110 | 11.20 |
| 2025-05-30 | 4,898,013 | -4.3% | 498,892 | 9.82 |
| 2025-05-15 | 5,120,116 | +36.1% | 829,974 | 6.17 |
| 2025-04-30 | 3,762,990 | +4.1% | 444,745 | 8.46 |
| 2025-04-15 | 3,615,483 | +6.3% | 749,090 | 4.83 |
| 2025-03-31 | 3,401,621 | +1.7% | 529,462 | 6.42 |
| 2025-03-14 | 3,345,074 | +1.6% | 692,174 | 4.83 |
| 2025-02-28 | 3,291,413 | -9.6% | 632,125 | 5.21 |
| 2025-02-14 | 3,640,806 | -2.3% | 456,179 | 7.98 |
| 2025-01-31 | 3,724,426 | -9.8% | 495,877 | 7.51 |
| 2025-01-15 | 4,130,401 | -1.4% | 525,494 | 7.86 |
| 2024-12-31 | 4,188,336 | +17.7% | 558,909 | 7.49 |
| 2024-12-13 | 3,557,564 | -0.6% | 317,314 | 11.21 |
| 2024-11-29 | 3,577,846 | +0.5% | 363,087 | 9.85 |
| 2024-11-15 | 3,561,555 | -5.6% | 504,101 | 7.07 |
| 2024-10-31 | 3,774,124 | -3.1% | 293,161 | 12.87 |
| 2024-10-15 | 3,896,759 | -6.3% | 344,971 | 11.30 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 23 October 2026, the short share of MAIN volume is 50.2%, down 7.8 points over the last five sessions. Over the last 30 readings it ranged from 32.2% (22 October 2026) to 61.6% (25 September 2026). The latest reading is in line with the 30-session average of 48.3%, on 163K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-10-23 | 82K | 163K | 50.2% | 1,516 |
| 2026-10-22 | 57K | 177K | 32.2% | 106 |
| 2026-10-21 | 75K | 139K | 53.7% | 280 |
| 2026-10-20 | 118K | 215K | 55.0% | 59 |
| 2026-10-19 | 181K | 306K | 59.3% | 200 |
| 2026-10-16 | 132K | 228K | 58.0% | 150 |
| 2026-10-15 | 154K | 266K | 57.9% | 508 |
| 2026-10-14 | 97K | 224K | 43.2% | 40 |
| 2026-10-13 | 111K | 219K | 50.8% | 414 |
| 2026-10-12 | 92K | 189K | 48.7% | 9 |
| 2026-10-09 | 81K | 198K | 40.8% | 297 |
| 2026-10-08 | 107K | 252K | 42.3% | 1,049 |
| 2026-10-07 | 185K | 304K | 60.7% | 10 |
| 2026-10-06 | 90K | 183K | 49.0% | 3,278 |
| 2026-10-05 | 146K | 283K | 51.6% | 510 |
| 2026-10-02 | 133K | 267K | 49.9% | 110 |
| 2026-10-01 | 174K | 283K | 61.4% | 454 |
| 2026-09-30 | 104K | 217K | 48.1% | 1,701 |
| 2026-09-29 | 121K | 263K | 46.1% | 152 |
| 2026-09-28 | 94K | 205K | 45.8% | 90 |
| 2026-09-25 | 177K | 287K | 61.6% | 467 |
| 2026-09-24 | 136K | 264K | 51.5% | 2,259 |
| 2026-09-23 | 86K | 224K | 38.3% | 3,103 |
| 2026-09-22 | 87K | 203K | 43.0% | 282 |
| 2026-09-21 | 74K | 197K | 37.7% | 68 |
| 2026-09-18 | 105K | 227K | 46.3% | 72 |
| 2026-09-17 | 73K | 191K | 38.4% | 535 |
| 2026-09-16 | 97K | 235K | 41.1% | 0 |
| 2026-09-15 | 87K | 200K | 43.4% | 250 |
| 2026-09-14 | 108K | 257K | 42.0% | 1,550 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 30 September 2026, the fails-to-deliver balance in MAIN is 18,436 shares, up 15,973 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (11 August 2026) to 106,018 shares (1 September 2026).
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-09-30 | 18,436 | $55.94 | $1.0M |
| 2026-09-29 | 2,463 | $55.07 | $136K |
| 2026-09-28 | 6,130 | $55.10 | $338K |
| 2026-09-23 | 8,038 | $56.00 | $450K |
| 2026-09-22 | 1,578 | $56.28 | $89K |
| 2026-09-21 | 46,356 | $56.19 | $2.6M |
| 2026-09-18 | 10,512 | $57.03 | $599K |
| 2026-09-17 | 2,243 | $56.24 | $126K |
| 2026-09-16 | 1,567 | $56.54 | $89K |
| 2026-09-15 | 1,221 | $56.37 | $69K |
| 2026-09-14 | 12,579 | $56.22 | $707K |
| 2026-09-11 | 3,608 | $55.80 | $201K |
| 2026-09-10 | 227 | $56.33 | $13K |
| 2026-09-08 | 5,308 | $57.68 | $306K |
| 2026-09-04 | 2,863 | $58.07 | $166K |
| 2026-09-03 | 3,973 | $57.87 | $230K |
| 2026-09-01 | 106,018 | $58.92 | $6.2M |
| 2026-08-31 | 2,026 | $58.55 | $119K |
| 2026-08-28 | 7,880 | $58.59 | $462K |
| 2026-08-27 | 1,352 | $58.43 | $79K |
| 2026-08-26 | 511 | $58.54 | $30K |
| 2026-08-25 | 367 | $58.92 | $22K |
| 2026-08-24 | 1,634 | $58.29 | $95K |
| 2026-08-21 | 4,097 | $58.40 | $239K |
| 2026-08-20 | 5,611 | $58.17 | $326K |
| 2026-08-19 | 285 | $57.81 | $16K |
| 2026-08-17 | 744 | $58.80 | $44K |
| 2026-08-14 | 8,270 | $59.23 | $490K |
| 2026-08-13 | 2,502 | $58.51 | $146K |
| 2026-08-11 | 1 | $58.52 | $59 |
Insider trades
SEC Form 4, newest first. JSONOver the last 90 days MAIN insiders reported 2 open-market buys ($151K) against 1 sell ($2.0M), so the dollar flow leans toward selling. Latest filing: McHugh Ryan (VP, CAO & Assistant Treasurer) on 2026-09-28.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-09-28 | McHugh Ryan | VP, CAO & Assistant Treasurer | Other transaction | 52 | $55.10 | $3K | 23K |
| 2026-09-28 | McHugh Ryan | VP, CAO & Assistant Treasurer | Other transaction | 45 | $55.10 | $2K | 23K |
| 2026-09-28 | SHIVE DUNIA A | Director | Other transaction | 118 | $55.07 | $7K | 28K |
| 2026-09-28 | SOLCHER STEPHEN B | Director | Other transaction | 227 | $55.07 | $12K | 53K |
| 2026-09-28 | Magdol David L. | PRESIDENT, CIO AND SMD | Other transaction | 71 | $55.10 | $4K | 441K |
| 2026-09-28 | Lane Brian E. | Director | Other transaction | 210 | $55.07 | $12K | 54K |
| 2026-09-28 | Lane Brian E. | Director | Other transaction | 79 | $55.10 | $4K | 54K |
| 2026-09-28 | JACKSON JOHN EARL | Director | Other transaction | 275 | $55.07 | $15K | 87K |
| 2026-09-28 | JACKSON JOHN EARL | Director | Other transaction | 108 | $55.10 | $6K | 86K |
| 2026-09-28 | Hyzak Dwayne L. | CEO, SMD | Other transaction | 499 | $55.10 | $28K | 510K |
| 2026-09-28 | Griffin Jon Kevin | Director | Other transaction | 282 | $55.07 | $16K | 75K |
| 2026-09-28 | Griffin Jon Kevin | Director | Other transaction | 25 | $55.10 | $1K | 75K |
| 2026-09-28 | FOSTER VINCENT D | Director | Other transaction | 99 | $55.10 | $5K | 71K |
| 2026-09-28 | FOSTER VINCENT D | Director | Other transaction | 192 | $55.10 | $11K | 36K |
| 2026-09-28 | FOSTER VINCENT D | Director | Other transaction | 99 | $55.10 | $5K | 71K |
| 2026-09-28 | FOSTER VINCENT D | Director | Other transaction | 1K | $55.10 | $71K | 1.7M |
| 2026-09-28 | FOSTER VINCENT D | Director | Other transaction | 16 | $55.10 | $874 | 1.7M |
| 2026-09-28 | Beauvais Jason B | EVP, GC, SECRETARY | Other transaction | 121 | $55.10 | $7K | 197K |
| 2026-09-15 | McHugh Ryan | VP, CAO & Assistant Treasurer | Other transaction | 45 | $56.37 | $3K | 23K |
| 2026-09-15 | McHugh Ryan | VP, CAO & Assistant Treasurer | Other transaction | 39 | $56.37 | $2K | 23K |
| 2026-09-15 | SHIVE DUNIA A | Director | Other transaction | 101 | $56.54 | $6K | 28K |
| 2026-09-15 | SOLCHER STEPHEN B | Director | Other transaction | 194 | $56.54 | $11K | 53K |
| 2026-09-15 | Magdol David L. | PRESIDENT, CIO AND SMD | Other transaction | 61 | $56.37 | $3K | 441K |
| 2026-09-15 | Magdol David L. | PRESIDENT, CIO AND SMD | Other transaction | 64 | $56.31 | $4K | 441K |
| 2026-09-15 | Lane Brian E. | Director | Other transaction | 180 | $56.54 | $10K | 54K |
| 2026-09-15 | Lane Brian E. | Director | Other transaction | 68 | $56.37 | $4K | 53K |
| 2026-09-15 | JACKSON JOHN EARL | Director | Other transaction | 9 | $56.24 | $506 | 2K |
| 2026-09-15 | JACKSON JOHN EARL | Director | Other transaction | 236 | $56.54 | $13K | 86K |
| 2026-09-15 | JACKSON JOHN EARL | Director | Other transaction | 93 | $56.37 | $5K | 86K |
| 2026-09-15 | Hyzak Dwayne L. | CEO, SMD | Other transaction | 429 | $56.37 | $24K | 509K |
| 2026-09-15 | Griffin Jon Kevin | Director | Other transaction | 242 | $56.54 | $14K | 75K |
| 2026-09-15 | Griffin Jon Kevin | Director | Other transaction | 21 | $56.37 | $1K | 75K |
| 2026-09-15 | FOSTER VINCENT D | Director | Other transaction | 85 | $56.37 | $5K | 71K |
| 2026-09-15 | FOSTER VINCENT D | Director | Other transaction | 165 | $56.37 | $9K | 35K |
| 2026-09-15 | FOSTER VINCENT D | Director | Other transaction | 85 | $56.37 | $5K | 71K |
| 2026-09-15 | FOSTER VINCENT D | Director | Other transaction | 1K | $56.37 | $63K | 1.7M |
| 2026-09-15 | FOSTER VINCENT D | Director | Other transaction | 14 | $56.37 | $768 | 1.7M |
| 2026-09-15 | Beauvais Jason B | EVP, GC, SECRETARY | Other transaction | 104 | $56.37 | $6K | 197K |
| 2026-09-02 | Beauvais Jason B | EVP, GC, SECRETARY | Gift | 126 | $0.00 | $0 | 197K |
| 2026-08-21 | Morris Jesse E | EVP AND COO | Sell | 35K | $58.55 | $2.0M | 233K |
| 2026-08-14 | FOSTER VINCENT D | Director | Other transaction | 81 | $59.23 | $5K | 70K |
| 2026-08-14 | McHugh Ryan | VP, CAO & Assistant Treasurer | Other transaction | 31 | $59.23 | $2K | 23K |
| 2026-08-14 | McHugh Ryan | VP, CAO & Assistant Treasurer | Other transaction | 37 | $59.23 | $2K | 23K |
| 2026-08-14 | SHIVE DUNIA A | Director | Other transaction | 97 | $58.80 | $6K | 28K |
| 2026-08-14 | SOLCHER STEPHEN B | Director | Other transaction | 186 | $58.80 | $11K | 53K |
| 2026-08-14 | Magdol David L. | PRESIDENT, CIO AND SMD | Other transaction | 58 | $59.23 | $3K | 441K |
| 2026-08-14 | Magdol David L. | PRESIDENT, CIO AND SMD | Other transaction | 61 | $59.00 | $4K | 441K |
| 2026-08-14 | Lane Brian E. | Director | Other transaction | 172 | $58.80 | $10K | 53K |
| 2026-08-14 | Lane Brian E. | Director | Other transaction | 64 | $59.23 | $4K | 53K |
| 2026-08-14 | JACKSON JOHN EARL | Director | Other transaction | 9 | $59.13 | $532 | 2K |
| 2026-08-14 | JACKSON JOHN EARL | Director | Other transaction | 226 | $58.80 | $13K | 86K |
| 2026-08-14 | JACKSON JOHN EARL | Director | Other transaction | 88 | $59.23 | $5K | 86K |
| 2026-08-14 | Hyzak Dwayne L. | CEO, SMD | Other transaction | 407 | $59.23 | $24K | 509K |
| 2026-08-14 | Griffin Jon Kevin | Director | Other transaction | 231 | $58.80 | $14K | 75K |
| 2026-08-14 | Griffin Jon Kevin | Director | Other transaction | 20 | $59.23 | $1K | 75K |
| 2026-08-14 | FOSTER VINCENT D | Director | Other transaction | 156 | $59.23 | $9K | 35K |
| 2026-08-14 | FOSTER VINCENT D | Director | Other transaction | 81 | $59.23 | $5K | 71K |
| 2026-08-14 | FOSTER VINCENT D | Director | Other transaction | 1K | $59.23 | $63K | 1.7M |
| 2026-08-14 | FOSTER VINCENT D | Director | Other transaction | 13 | $59.23 | $765 | 1.7M |
| 2026-08-14 | Beauvais Jason B | EVP, GC, SECRETARY | Other transaction | 98 | $59.23 | $6K | 197K |
| 2026-08-13 | McHugh Ryan | VP, CAO & Assistant Treasurer | Buy | 2K | $59.04 | $121K | 23K |
| 2026-08-13 | McHugh Ryan | VP, CAO & Assistant Treasurer | Buy | 500 | $59.09 | $30K | 21K |
| 2026-07-15 | FOSTER VINCENT D | Director | Other transaction | 90 | $53.09 | $5K | 70K |
| 2026-07-15 | McHugh Ryan | VP, CAO & Assistant Treasurer | Other transaction | 34 | $53.09 | $2K | 20K |
| 2026-07-15 | McHugh Ryan | VP, CAO & Assistant Treasurer | Other transaction | 41 | $53.09 | $2K | 20K |
| 2026-07-15 | SHIVE DUNIA A | Director | Other transaction | 106 | $53.41 | $6K | 27K |
| 2026-07-15 | SOLCHER STEPHEN B | Director | Other transaction | 203 | $53.41 | $11K | 53K |
| 2026-07-15 | Magdol David L. | PRESIDENT, CIO AND SMD | Other transaction | 64 | $53.09 | $3K | 441K |
| 2026-07-15 | Magdol David L. | PRESIDENT, CIO AND SMD | Other transaction | 67 | $53.50 | $4K | 441K |
| 2026-07-15 | Lane Brian E. | Director | Other transaction | 188 | $53.41 | $10K | 53K |
| 2026-07-15 | Lane Brian E. | Director | Other transaction | 72 | $53.09 | $4K | 53K |
| 2026-07-15 | JACKSON JOHN EARL | Director | Other transaction | 10 | $53.47 | $535 | 2K |
| 2026-07-15 | JACKSON JOHN EARL | Director | Other transaction | 247 | $53.41 | $13K | 85K |
| 2026-07-15 | JACKSON JOHN EARL | Director | Other transaction | 97 | $53.09 | $5K | 85K |
| 2026-07-15 | Hyzak Dwayne L. | CEO, SMD | Other transaction | 451 | $53.09 | $24K | 508K |
| 2026-07-15 | Griffin Jon Kevin | Director | Other transaction | 253 | $53.41 | $14K | 75K |
| 2026-07-15 | Griffin Jon Kevin | Director | Other transaction | 22 | $53.09 | $1K | 74K |
| 2026-07-15 | FOSTER VINCENT D | Director | Other transaction | 174 | $53.09 | $9K | 35K |
| 2026-07-15 | FOSTER VINCENT D | Director | Other transaction | 90 | $53.09 | $5K | 71K |
| 2026-07-15 | FOSTER VINCENT D | Director | Other transaction | 1K | $53.09 | $62K | 1.7M |
| 2026-07-15 | FOSTER VINCENT D | Director | Other transaction | 14 | $53.09 | $761 | 1.7M |
| 2026-07-15 | Beauvais Jason B | EVP, GC, SECRETARY | Other transaction | 109 | $53.09 | $6K | 197K |
| 2026-06-30 | Beauvais Jason B | EVP, GC, SECRETARY | Sell | 7K | $51.73 | $353K | 196K |
| 2026-06-29 | FOSTER VINCENT D | Director | Other transaction | 105 | $51.01 | $5K | 70K |
| 2026-06-29 | McHugh Ryan | VP, CAO & Assistant Treasurer | Other transaction | 34 | $51.01 | $2K | 20K |
| 2026-06-29 | McHugh Ryan | VP, CAO & Assistant Treasurer | Other transaction | 48 | $51.01 | $2K | 20K |
| 2026-06-29 | SHIVE DUNIA A | Director | Other transaction | 124 | $51.56 | $6K | 27K |
| 2026-06-29 | SOLCHER STEPHEN B | Director | Other transaction | 237 | $51.56 | $12K | 52K |
| 2026-06-29 | Magdol David L. | PRESIDENT, CIO AND SMD | Other transaction | 75 | $51.01 | $4K | 441K |
| 2026-06-29 | Lane Brian E. | Director | Other transaction | 220 | $51.56 | $11K | 53K |
| 2026-06-29 | Lane Brian E. | Director | Other transaction | 84 | $51.01 | $4K | 53K |
| 2026-06-29 | JACKSON JOHN EARL | Director | Other transaction | 288 | $51.56 | $15K | 85K |
| 2026-06-29 | JACKSON JOHN EARL | Director | Other transaction | 114 | $51.01 | $6K | 85K |
| 2026-06-29 | Hyzak Dwayne L. | CEO, SMD | Other transaction | 529 | $51.01 | $27K | 508K |
| 2026-06-29 | Griffin Jon Kevin | Director | Other transaction | 296 | $51.56 | $15K | 74K |
| 2026-06-29 | Griffin Jon Kevin | Director | Other transaction | 26 | $51.01 | $1K | 74K |
| 2026-06-29 | FOSTER VINCENT D | Director | Other transaction | 203 | $51.01 | $10K | 35K |
| 2026-06-29 | FOSTER VINCENT D | Director | Other transaction | 105 | $51.01 | $5K | 71K |
| 2026-06-29 | FOSTER VINCENT D | Director | Other transaction | 1K | $51.01 | $70K | 1.7M |
| 2026-06-29 | FOSTER VINCENT D | Director | Other transaction | 17 | $51.01 | $856 | 1.7M |
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. JSON2 Form 144 notices on file for MAIN worth $2.4M at the prices reported; 1 in the last 90 days worth $2.0M. Latest: Jesse E. Morris filed on 2026-08-21 to sell 35,000 shares ($2.0M) from 2026-08-21.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-08-21 | Jesse E. MorrisOfficer | 35K | $2.0M | 0.037% | 2026-08-21 | Raymond James & Associates, Inc. |
| 2026-06-30 | Jason B. BeauvaisOfficer | 7K | $352K | 0.007% | 2026-06-30 | Raymond James & Associates, Inc. |
13F holders
Tracked managers holding MAIN at their latest 13F. JSON5 of the 30 tracked managers held MAIN at their latest 13F, $29.8M in total at quarter-end prices. D. E. Shaw & Co. is the largest at $19.5M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 2 added shares and 3 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| D. E. Shaw & Co. | 2026-06-30 | 375K | $19.5M | 0.01% | -168K |
| Millennium Management | 2026-06-30 | 135K | $7.0M | 0.00% | -225K |
| Citadel Advisors | 2026-06-30 | 32K | $1.6M | 0.00% | +2K |
| AQR Capital Management | 2026-06-30 | 23K | $1.2M | 0.00% | +6K |
| Two Sigma Investments | 2026-06-30 | 10K | $534K | 0.00% | -514K |
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
Main Street Capital 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 Main Street Capital (MAIN), SEC CIK 1396440, listed on NYSE. 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 2026-09-30.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 2026-08-21.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 2026-10-15.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 2026-09-28.JSON and CSV
- Company record
- EDGAR filing index for CIK 1396440Ticker, 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 MAIN is sold short?
9,560,436 shares were held short at the 2026-09-30 settlement, 20.1 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 MAIN's daily short volume?
On 2026-10-23, 81,721 of the 162,858 MAIN shares reported to FINRA were sold short, 50.2% of the day's reported volume. Short volume is a flow for one day, not a position.
Does MAIN have fails to deliver?
The SEC's latest file shows 18,436 MAIN shares failed to deliver at settlement 2026-09-30. Fails are reported per settlement date and published twice a month with a lag.
Are MAIN insiders buying or selling?
Over the last 90 days MAIN insiders reported 2 open-market buys ($151K) against 1 sell ($2.0M), so the dollar flow leans toward selling. Latest filing: McHugh Ryan (VP, CAO & Assistant Treasurer) on 2026-09-28.
Have MAIN insiders filed to sell?
2 Form 144 notices on file for MAIN worth $2.4M at the prices reported; 1 in the last 90 days worth $2.0M. Latest: Jesse E. Morris filed on 2026-08-21 to sell 35,000 shares ($2.0M) from 2026-08-21.
Which tracked 13F managers own MAIN?
5 of the 30 tracked 13F managers held MAIN shares at their latest filing, $29.8M in all. The largest: D. E. Shaw & Co. (375K shares, $19.5M), Izzy Englander's Millennium Management (135K shares, $7.0M), Ken Griffin's Citadel Advisors (32K shares, $1.6M), Cliff Asness's AQR Capital Management (23K shares, $1.2M), Two Sigma Investments (10K shares, $534K).
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.