Momentus (MNTS)
Momentus on one page: short interest, daily short volume, fails to deliver, large holders, 13F holders, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as guided missiles & space vehicles & parts.
1.6M
Short interest
settlement 2026-10-15
2.4
Days to cover
-0.4 days vs prior
27.5%
Short share of volume
2026-10-28
21,243
Fails to deliver
settlement 2026-09-22
Tue 4 May
Next earnings
estimated date
$0
Insider flow, 90 days
0 buys, 0 sells
As of 2026-10-28.
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 MNTS is 1,600,272 shares, down 258,587 shares over the last month. Over the last 48 readings it ranged from 86,313 shares (15 January 2025) to 2,993,305 shares (29 May 2026). At the reported average volume of 680K shares a day that is 2.4 days to cover.
Embed this chart.The embed keeps its attribution line.
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| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 1,600,272 | -15.5% | 679,790 | 2.35 |
| 2026-09-30 | 1,893,041 | +1.8% | 684,947 | 2.76 |
| 2026-09-15 | 1,858,859 | +12.5% | 517,048 | 3.60 |
| 2026-08-31 | 1,651,820 | +17.8% | 760,281 | 2.17 |
| 2026-08-14 | 1,401,944 | +2.9% | 1,595,536 | 1.00 |
| 2026-07-31 | 1,362,690 | +3.3% | 986,349 | 1.38 |
| 2026-07-15 | 1,319,788 | +21.9% | 1,394,653 | 1.00 |
| 2026-06-30 | 1,082,222 | -36.0% | 3,200,313 | 1.00 |
| 2026-06-15 | 1,691,283 | -43.5% | 7,995,092 | 1.00 |
| 2026-05-29 | 2,993,305 | +401.1% | 17,816,128 | 1.00 |
| 2026-05-15 | 597,365 | -47.9% | 2,571,028 | 1.00 |
| 2026-04-30 | 1,147,263 | -26.1% | 2,542,811 | 1.00 |
| 2026-04-15 | 1,552,571 | +406.7% | 4,766,909 | 1.00 |
| 2026-03-31 | 306,430 | +19.2% | 831,115 | 1.00 |
| 2026-03-13 | 257,019 | +5.7% | 208,780 | 1.23 |
| 2026-02-27 | 243,150 | -23.5% | 281,295 | 1.00 |
| 2026-02-13 | 317,894 | +56.5% | 3,723,230 | 1.00 |
| 2026-01-30 | 203,061 | -13.3% | 614,419 | 1.00 |
| 2026-01-15 | 234,199 | +47.4% | 11,594,081 | 1.00 |
| 2025-12-31 | 158,873 | -91.9% | 1,132,590 | 1.00 |
| 2025-12-15 | 1,970,344 | +90.7% | 16,033,235 | 1.00 |
| 2025-11-28 | 1,033,025 | -37.5% | 727,797 | 1.42 |
| 2025-11-14 | 1,652,997 | -18.1% | 702,967 | 2.35 |
| 2025-10-31 | 2,017,165 | +0.8% | 2,023,621 | 1.00 |
| 2025-10-15 | 2,001,471 | +114.3% | 11,851,296 | 1.00 |
| 2025-09-30 | 934,007 | +1.1% | 617,225 | 1.51 |
| 2025-09-15 | 923,585 | +14.0% | 472,339 | 1.96 |
| 2025-08-29 | 810,404 | -53.5% | 1,061,496 | 1.00 |
| 2025-08-15 | 1,741,129 | +170.9% | 30,757,756 | 1.00 |
| 2025-07-31 | 642,805 | +11.4% | 322,305 | 1.99 |
| 2025-07-15 | 577,242 | +57.2% | 834,532 | 1.00 |
| 2025-06-30 | 367,181 | -17.4% | 5,090,879 | 1.00 |
| 2025-06-13 | 444,460 | +124.8% | 1,022,771 | 1.00 |
| 2025-05-30 | 197,752 | -19.0% | 133,637 | 1.48 |
| 2025-05-15 | 244,194 | +36.3% | 91,941 | 2.66 |
| 2025-04-30 | 179,223 | -31.3% | 82,021 | 2.19 |
| 2025-04-15 | 260,707 | -7.2% | 116,134 | 2.24 |
| 2025-03-31 | 280,906 | -26.7% | 247,602 | 1.13 |
| 2025-03-14 | 383,038 | +48.1% | 681,770 | 1.00 |
| 2025-02-28 | 258,610 | -40.7% | 245,754 | 1.05 |
| 2025-02-14 | 436,001 | +133.5% | 5,396,509 | 1.00 |
| 2025-01-31 | 186,720 | +116.3% | 187,619 | 1.00 |
| 2025-01-15 | 86,313 | -59.5% | 134,475 | 1.00 |
| 2024-12-31 | 212,890 | +38.1% | 699,558 | 1.00 |
| 2024-12-13 | 154,179 | -73.9% | 148,251 | 1.04 |
| 2024-11-29 | 590,802 | +204.5% | 1,450,175 | 1.00 |
| 2024-11-15 | 194,034 | -86.2% | 3,207,527 | 1.00 |
| 2024-10-31 | 1,402,760 | -24.4% | 1,726,801 | 1.00 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 28 October 2026, the short share of MNTS volume is 27.5%, down 14.5 points over the last five sessions. Over the last 30 readings it ranged from 21.2% (19 October 2026) to 63.3% (18 September 2026). The latest reading is 17.2 points below the 30-session average of 44.7%, on 258K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-10-28 | 71K | 258K | 27.5% | 2,119 |
| 2026-10-27 | 144K | 517K | 27.8% | 129 |
| 2026-10-26 | 51K | 140K | 36.3% | 391 |
| 2026-10-23 | 98K | 237K | 41.2% | 8,598 |
| 2026-10-22 | 209K | 501K | 41.7% | 18,489 |
| 2026-10-21 | 91K | 216K | 42.0% | 1,379 |
| 2026-10-20 | 162K | 373K | 43.5% | 3,799 |
| 2026-10-19 | 69K | 328K | 21.2% | 246 |
| 2026-10-16 | 117K | 271K | 43.3% | 5,694 |
| 2026-10-15 | 184K | 397K | 46.3% | 13,999 |
| 2026-10-14 | 295K | 590K | 50.1% | 28,725 |
| 2026-10-13 | 304K | 621K | 49.0% | 17,450 |
| 2026-10-12 | 174K | 445K | 39.1% | 19,118 |
| 2026-10-09 | 145K | 314K | 46.1% | 2,268 |
| 2026-10-08 | 74K | 196K | 37.8% | 5,901 |
| 2026-10-07 | 86K | 182K | 47.2% | 223 |
| 2026-10-06 | 119K | 261K | 45.5% | 4,342 |
| 2026-10-05 | 144K | 300K | 48.0% | 10,147 |
| 2026-10-02 | 159K | 338K | 47.1% | 5,599 |
| 2026-10-01 | 101K | 217K | 46.6% | 2,150 |
| 2026-09-30 | 162K | 355K | 45.7% | 1,606 |
| 2026-09-29 | 341K | 726K | 47.0% | 17,041 |
| 2026-09-28 | 123K | 285K | 43.1% | 5,992 |
| 2026-09-25 | 115K | 303K | 38.0% | 349 |
| 2026-09-24 | 153K | 271K | 56.5% | 4,551 |
| 2026-09-23 | 85K | 151K | 56.4% | 0 |
| 2026-09-22 | 100K | 201K | 50.0% | 0 |
| 2026-09-21 | 235K | 403K | 58.4% | 25 |
| 2026-09-18 | 110K | 174K | 63.3% | 652 |
| 2026-09-17 | 324K | 581K | 55.7% | 4,479 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 22 September 2026, the fails-to-deliver balance in MNTS is 21,243 shares, up 19,390 shares over the last settlement date. Over the last 30 readings it ranged from 76 shares (14 August 2026) to 402,647 shares (10 August 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-09-22 | 21,243 | $4.48 | $95K |
| 2026-09-18 | 1,853 | $4.34 | $8K |
| 2026-09-17 | 1,120 | $4.09 | $5K |
| 2026-09-10 | 13,166 | $4.06 | $53K |
| 2026-09-08 | 5,912 | $4.18 | $25K |
| 2026-09-03 | 12,511 | $4.20 | $53K |
| 2026-09-02 | 5,571 | $4.07 | $23K |
| 2026-09-01 | 26,789 | $4.25 | $114K |
| 2026-08-31 | 21,249 | $4.10 | $87K |
| 2026-08-27 | 1,107 | $4.24 | $5K |
| 2026-08-25 | 2,265 | $4.16 | $9K |
| 2026-08-21 | 4,500 | $4.13 | $19K |
| 2026-08-20 | 1,271 | $4.24 | $5K |
| 2026-08-19 | 4,937 | $4.24 | $21K |
| 2026-08-14 | 76 | $4.91 | $373 |
| 2026-08-13 | 5,716 | $4.86 | $28K |
| 2026-08-12 | 5,846 | $4.81 | $28K |
| 2026-08-11 | 6,030 | $4.69 | $28K |
| 2026-08-10 | 402,647 | $4.92 | $2.0M |
| 2026-08-05 | 10,501 | $4.55 | $48K |
| 2026-08-04 | 1,467 | $4.20 | $6K |
| 2026-08-03 | 120 | $4.05 | $486 |
| 2026-07-30 | 4,502 | $4.16 | $19K |
| 2026-07-21 | 951 | $4.82 | $5K |
| 2026-07-17 | 675 | $4.87 | $3K |
| 2026-07-16 | 1,435 | $5.47 | $8K |
| 2026-07-13 | 35,790 | $6.06 | $217K |
| 2026-07-10 | 30,679 | $6.12 | $188K |
| 2026-07-09 | 4,588 | $6.04 | $28K |
| 2026-07-08 | 30,861 | $6.22 | $192K |
Insider trades
SEC Form 4, newest first. JSONNo open-market insider trades were reported for MNTS in the last 90 days. The most recent filings are listed below. Latest filing: Hadfield Chris (Director) on 2026-05-21.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-05-21 | Hadfield Chris | Director | Buy | 2K | $7.19 | $14K | 4K |
| 2026-05-20 | Kabot Brian | Director | Buy | 250 | $5.51 | $1K | 5K |
| 2026-05-19 | Layman Jon | Chief Legal Officer | Grant | 14K | $0.00 | $0 | 14K |
| 2026-05-19 | Kabot Brian | Director | Buy | 250 | $5.62 | $1K | 4K |
| 2026-05-19 | SCHWARZ ROBERT E | Chief Technology Officer | Grant | 6K | $0.00 | $0 | 6K |
| 2026-05-19 | Rood John C. | Chief Executive Officer | Grant | 55K | $0.00 | $0 | 55K |
| 2026-05-19 | Layman Jon | Chief Legal Officer | Grant | 6K | $0.00 | $0 | 6K |
| 2026-05-19 | Ensler Lon | Chief Financial Officer | Grant | 5K | $0.00 | $0 | 5K |
| 2026-05-18 | Reiners Linda J. | Director | Exercise or conversion | 913 | $0.00 | $0 | 2K |
| 2026-05-18 | Reed Kimberly A. | Director | Exercise or conversion | 913 | $0.00 | $0 | 2K |
| 2026-05-18 | Mercado Victorino | Director | Exercise or conversion | 913 | $0.00 | $0 | 2K |
| 2026-05-18 | Kabot Brian | Director | Exercise or conversion | 913 | $0.00 | $0 | 4K |
| 2026-05-18 | Hadfield Chris | Director | Exercise or conversion | 913 | $0.00 | $0 | 2K |
| 2026-05-15 | Hadfield Chris | Director | Buy | 2K | $5.32 | $8K | 2K |
| 2026-05-15 | Kabot Brian | Director | Buy | 2K | $5.40 | $10K | 3K |
| 2025-08-20 | Rood John C. | Chief Executive Officer | Tax withholding | 116 | $1.28 | $148 | 2K |
| 2025-08-20 | Rood John C. | Chief Executive Officer | Exercise or conversion | 327 | $0.00 | $0 | 2K |
| 2025-06-30 | Reed Kimberly A. | Director | Grant | 16K | $0.00 | $0 | 21K |
| 2025-06-30 | Reiners Linda J. | Director | Grant | 16K | $0.00 | $0 | 21K |
| 2025-06-30 | Mercado Victorino | Director | Grant | 16K | $0.00 | $0 | 21K |
| 2025-06-30 | Kabot Brian | Director | Grant | 16K | $0.00 | $0 | 23K |
| 2025-06-30 | Hadfield Chris | Director | Grant | 16K | $0.00 | $0 | 17K |
| 2025-03-20 | Rood John C. | Chief Executive Officer | Tax withholding | 213 | $1.93 | $411 | 2K |
| 2025-03-20 | Rood John C. | Chief Executive Officer | Exercise or conversion | 600 | $0.00 | $0 | 2K |
| 2025-03-20 | Rood John C. | Chief Executive Officer | Tax withholding | 113 | $1.93 | $218 | 2K |
| 2025-03-20 | Rood John C. | Chief Executive Officer | Exercise or conversion | 318 | $0.00 | $0 | 2K |
| 2025-03-20 | SCHWARZ ROBERT E | Chief Technology Officer | Exercise or conversion | 157 | $0.00 | $0 | 396 |
| 2025-03-20 | SCHWARZ ROBERT E | Chief Technology Officer | Tax withholding | 33 | $1.93 | $64 | 239 |
| 2025-03-20 | SCHWARZ ROBERT E | Chief Technology Officer | Exercise or conversion | 80 | $0.00 | $0 | 272 |
| 2025-03-20 | SCHWARZ ROBERT E | Chief Technology Officer | Tax withholding | 65 | $1.93 | $125 | 331 |
| 2024-11-20 | Ney Paul | Chief Legal Officer & Corp.Sec | Exercise or conversion | 1K | $0.00 | $0 | 5K |
| 2024-11-20 | Ney Paul | Chief Legal Officer & Corp.Sec | Tax withholding | 335 | $0.56 | $188 | 5K |
| 2024-11-01 | Reiners Linda J. | Director | Exercise or conversion | 2K | $0.00 | $0 | 5K |
| 2024-11-01 | Reiners Linda J. | Director | Exercise or conversion | 222 | $0.00 | $0 | 3K |
| 2024-11-01 | Reed Kimberly A. | Director | Exercise or conversion | 222 | $0.00 | $0 | 3K |
| 2024-11-01 | Reed Kimberly A. | Director | Exercise or conversion | 2K | $0.00 | $0 | 5K |
| 2024-11-01 | Mercado Victorino | Director | Exercise or conversion | 222 | $0.00 | $0 | 2K |
| 2024-11-01 | Mercado Victorino | Director | Exercise or conversion | 2K | $0.00 | $0 | 4K |
| 2024-11-01 | Hadfield Chris | Director | Exercise or conversion | 222 | $0.00 | $0 | 1K |
| 2024-11-01 | Rood John C. | Chief Executive Officer | Exercise or conversion | 5K | $0.00 | $0 | 21K |
| 2024-11-01 | Rood John C. | Chief Executive Officer | Tax withholding | 1K | $0.57 | $787 | 20K |
| 2024-11-01 | Kabot Brian | Director | Exercise or conversion | 222 | $0.00 | $0 | 4K |
| 2024-11-01 | Kabot Brian | Director | Exercise or conversion | 2K | $0.00 | $0 | 6K |
| 2024-03-20 | Ney Paul | Chief Legal Officer & Corp.Sec | Exercise or conversion | 289 | $0.00 | $0 | 2K |
| 2024-03-20 | Ney Paul | Chief Legal Officer & Corp.Sec | Tax withholding | 742 | $0.45 | $334 | 4K |
| 2024-03-20 | Ney Paul | Chief Legal Officer & Corp.Sec | Tax withholding | 86 | $0.45 | $39 | 2K |
| 2024-03-20 | Ney Paul | Chief Legal Officer & Corp.Sec | Exercise or conversion | 3K | $0.00 | $0 | 5K |
| 2024-03-20 | SCHWARZ ROBERT E | Chief Technology Officer | Exercise or conversion | 1K | $0.00 | $0 | 2K |
| 2024-03-20 | SCHWARZ ROBERT E | Chief Technology Officer | Tax withholding | 456 | $0.45 | $205 | 1K |
| 2024-03-20 | SCHWARZ ROBERT E | Chief Technology Officer | Exercise or conversion | 2K | $0.00 | $0 | 4K |
| 2024-03-20 | SCHWARZ ROBERT E | Chief Technology Officer | Tax withholding | 902 | $0.45 | $406 | 3K |
| 2024-03-20 | Rood John C. | Chief Executive Officer | Tax withholding | 2K | $0.45 | $1K | 17K |
| 2024-03-20 | Rood John C. | Chief Executive Officer | Exercise or conversion | 8K | $0.00 | $0 | 19K |
| 2024-03-20 | Rood John C. | Chief Executive Officer | Tax withholding | 1K | $0.45 | $584 | 11K |
| 2024-03-20 | Rood John C. | Chief Executive Officer | Exercise or conversion | 4K | $0.00 | $0 | 12K |
| 2023-12-01 | Kabot Brian | Director | Sell | 400 | $2.60 | $1K | 4K |
| 2023-11-20 | Ney Paul | Chief Legal Officer & Corp.Sec | Tax withholding | 335 | $2.77 | $928 | 2K |
| 2023-11-20 | Ney Paul | Chief Legal Officer & Corp.Sec | Exercise or conversion | 1K | $0.00 | $0 | 2K |
| 2023-11-01 | Kabot Brian | Director | Sell | 400 | $3.50 | $1K | 4K |
| 2023-10-02 | Kabot Brian | Director | Sell | 400 | $2.17 | $868 | 5K |
| 2023-09-26 | MOMENTUS PML SPV 2 LP | TenPercentOwner | Sell | 17K | $1.91 | $33K | 61K |
| 2023-09-26 | MOMENTUS PML SPV 2 LP | TenPercentOwner | Sell | 7K | $1.91 | $13K | 24K |
| 2023-09-26 | MOMENTUS PML SPV 2 LP | TenPercentOwner | Sell | 1K | $1.91 | $3K | 5K |
| 2023-09-26 | MOMENTUS PML SPV 2 LP | TenPercentOwner | Sell | 3K | $1.91 | $6K | 12K |
| 2023-09-26 | MOMENTUS PML SPV 2 LP | TenPercentOwner | Sell | 1K | $1.91 | $3K | 5K |
| 2023-09-25 | MOMENTUS PML SPV 2 LP | TenPercentOwner | Sell | 31K | $2.04 | $64K | 78K |
| 2023-09-25 | MOMENTUS PML SPV 2 LP | TenPercentOwner | Sell | 12K | $2.04 | $25K | 31K |
| 2023-09-25 | MOMENTUS PML SPV 2 LP | TenPercentOwner | Sell | 2K | $2.04 | $5K | 6K |
| 2023-09-25 | MOMENTUS PML SPV 2 LP | TenPercentOwner | Sell | 6K | $2.04 | $12K | 15K |
| 2023-09-25 | MOMENTUS PML SPV 2 LP | TenPercentOwner | Sell | 2K | $2.04 | $5K | 6K |
| 2023-09-22 | MOMENTUS PML SPV 2 LP | TenPercentOwner | Sell | 14K | $2.39 | $32K | 109K |
| 2023-09-22 | MOMENTUS PML SPV 2 LP | TenPercentOwner | Sell | 5K | $2.39 | $13K | 43K |
| 2023-09-22 | MOMENTUS PML SPV 2 LP | TenPercentOwner | Sell | 1K | $2.39 | $3K | 9K |
| 2023-09-22 | MOMENTUS PML SPV 2 LP | TenPercentOwner | Sell | 3K | $2.39 | $6K | 21K |
| 2023-09-22 | MOMENTUS PML SPV 2 LP | TenPercentOwner | Sell | 1K | $2.39 | $3K | 8K |
| 2023-09-14 | Sloss Dakin | TenPercentOwner | Sell | 6K | $3.36 | $21K | 9K |
| 2023-09-14 | Sloss Dakin | TenPercentOwner | Sell | 16K | $3.36 | $53K | 24K |
| 2023-09-14 | Sloss Dakin | TenPercentOwner | Sell | 6K | $3.36 | $21K | 10K |
| 2023-09-14 | Sloss Dakin | TenPercentOwner | Sell | 32K | $3.36 | $108K | 49K |
| 2023-09-14 | Sloss Dakin | TenPercentOwner | Sell | 81K | $3.36 | $272K | 123K |
| 2023-09-13 | Sloss Dakin | TenPercentOwner | Sell | 19K | $4.51 | $84K | 204K |
| 2023-09-13 | Sloss Dakin | TenPercentOwner | Sell | 1K | $4.51 | $6K | 16K |
| 2023-09-13 | Sloss Dakin | TenPercentOwner | Sell | 4K | $4.51 | $16K | 39K |
| 2023-09-13 | Sloss Dakin | TenPercentOwner | Sell | 1K | $4.51 | $7K | 16K |
| 2023-09-13 | Sloss Dakin | TenPercentOwner | Sell | 7K | $4.51 | $33K | 81K |
| 2023-09-12 | Sloss Dakin | TenPercentOwner | Sell | 89 | $5.19 | $462 | 17K |
| 2023-09-12 | Sloss Dakin | TenPercentOwner | Sell | 450 | $5.19 | $2K | 88K |
| 2023-09-12 | Sloss Dakin | TenPercentOwner | Sell | 1K | $5.19 | $6K | 222K |
| 2023-09-12 | Sloss Dakin | TenPercentOwner | Sell | 220 | $5.19 | $1K | 43K |
| 2023-09-12 | Sloss Dakin | TenPercentOwner | Sell | 88 | $5.19 | $457 | 17K |
| 2023-09-11 | Prime Movers Lab Fund I LP | TenPercentOwner | Sell | 877 | $5.57 | $5K | 43K |
| 2023-09-11 | Prime Movers Lab Fund I LP | TenPercentOwner | Sell | 349 | $5.57 | $2K | 17K |
| 2023-09-11 | Prime Movers Lab Fund I LP | TenPercentOwner | Sell | 354 | $5.57 | $2K | 17K |
| 2023-09-11 | Prime Movers Lab Fund I LP | TenPercentOwner | Sell | 2K | $5.57 | $10K | 89K |
| 2023-09-11 | Prime Movers Lab Fund I LP | TenPercentOwner | Sell | 5K | $5.57 | $25K | 224K |
| 2023-09-08 | Prime Movers Lab Fund I LP | TenPercentOwner | Sell | 484 | $5.81 | $3K | 18K |
| 2023-09-08 | Prime Movers Lab Fund I LP | TenPercentOwner | Sell | 1K | $5.81 | $7K | 44K |
| 2023-09-08 | Prime Movers Lab Fund I LP | TenPercentOwner | Sell | 490 | $5.81 | $3K | 18K |
| 2023-09-08 | Prime Movers Lab Fund I LP | TenPercentOwner | Sell | 2K | $5.81 | $14K | 90K |
| 2023-09-08 | Prime Movers Lab Fund I LP | TenPercentOwner | Sell | 6K | $5.81 | $36K | 228K |
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.
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSONNo holder on file reports 5% or more of MNTS in its latest filing.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-08-14 | 13G/Ano. 1 | Kenneth Griffinparent holding company, individual | 310K | 1.6% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 1 | Citadel Advisors LLCinvestment adviser, parent holding company, other entity | 248K | 1.3% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 1 | Citadel Advisors Holdings LPparent holding company, partnership | 248K | 1.3% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 1 | Citadel GP LLCparent holding company, other entity | 248K | 1.3% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 1 | Citadel Securities GP LLCparent holding company, other entity | 61K | 0.3% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 1 | Citadel Securities Group LPparent holding company, partnership | 61K | 0.3% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 1 | Citadel Securities LLCbroker-dealer, other entity | 61K | 0.3% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 1 | Davidson Kempner Capital Management LPpartnership | 850K | 4.5% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 1 | Anthony A. Yoseloffindividual | 850K | 4.5% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 1 | Davidson Kempner Arbitrage, Equities & Relative Value LPpartnership | 835K | 4.4% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 1 | M.H. Davidson & Co.partnership | 15K | 0.1% | 2026-06-30 |
13F holders
Tracked managers holding MNTS at their latest 13F. JSON1 of the 30 tracked managers held MNTS at their latest 13F, $2.0M in total at quarter-end prices. Citadel Advisors is the largest at $2.0M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 1 added shares and 0 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Citadel Advisors | 2026-06-30 | 294K | $2.0M | 0.00% | new |
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
Momentus 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 Momentus (MNTS), SEC CIK 1781162, listed on Nasdaq, classified by the SEC as guided missiles & space vehicles & parts. 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 2026-10-28.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-09-22.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 2026-08-14.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 2026-05-05.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 2026-05-21.JSON and CSV
- Company record
- EDGAR filing index for CIK 1781162Ticker, 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 MNTS is sold short?
1,600,272 shares were held short at the 2026-10-15 settlement, 2.4 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 MNTS's daily short volume?
On 2026-10-28, 71,031 of the 257,931 MNTS shares reported to FINRA were sold short, 27.5% of the day's reported volume. Short volume is a flow for one day, not a position.
Does MNTS have fails to deliver?
The SEC's latest file shows 21,243 MNTS shares failed to deliver at settlement 2026-09-22. Fails are reported per settlement date and published twice a month with a lag.
Are MNTS insiders buying or selling?
No open-market insider trades were reported for MNTS in the last 90 days. The most recent filings are listed below. Latest filing: Hadfield Chris (Director) on 2026-05-21.
Who owns 5% or more of MNTS?
No holder on file reports 5% or more of MNTS in its latest filing.
Which tracked 13F managers own MNTS?
1 of the 30 tracked 13F managers held MNTS shares at their latest filing, $2.0M in all. The largest: Ken Griffin's Citadel Advisors (294K shares, $2.0M).
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.