Sidus Space (SIDU)
Sidus Space on one page: short interest, daily short volume, fails to deliver, large holders, 13F holders, earnings dates and insider trades. Listed on Nasdaq.
19.9M
Short interest
settlement 2026-10-15
4.6
Days to cover
+0.1 days vs prior
53.3%
Short share of volume
2026-11-02
6,386
Fails to deliver
settlement 2026-10-14
Fri 13 Nov
Next earnings
estimated date
$0
Insider flow, 90 days
0 buys, 0 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 SIDU is 19,914,628 shares, up 3,184,052 shares over the last month. Over the last 48 readings it ranged from 303,449 shares (29 November 2024) to 25,815,888 shares (15 July 2026). At the reported average volume of 4.3M shares a day that is 4.6 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 | 19,914,628 | +9.3% | 4,337,553 | 4.59 |
| 2026-09-30 | 18,216,483 | +8.9% | 4,057,410 | 4.49 |
| 2026-09-15 | 16,730,576 | -13.9% | 3,277,072 | 5.11 |
| 2026-08-31 | 19,426,420 | -22.5% | 3,269,949 | 5.94 |
| 2026-08-14 | 25,054,827 | -2.6% | 7,358,194 | 3.41 |
| 2026-07-31 | 25,731,240 | -0.3% | 5,731,778 | 4.49 |
| 2026-07-15 | 25,815,888 | +20.1% | 6,770,061 | 3.81 |
| 2026-06-30 | 21,504,008 | +32.0% | 12,298,006 | 1.75 |
| 2026-06-15 | 16,286,222 | +122.5% | 24,594,477 | 1.00 |
| 2026-05-29 | 7,317,931 | -6.9% | 36,836,790 | 1.00 |
| 2026-05-15 | 7,863,050 | +8.4% | 19,330,169 | 1.00 |
| 2026-04-30 | 7,250,869 | -30.3% | 23,986,676 | 1.00 |
| 2026-04-15 | 10,405,796 | +40.1% | 41,147,772 | 1.00 |
| 2026-03-31 | 7,426,530 | +8.5% | 9,589,947 | 1.00 |
| 2026-03-13 | 6,845,530 | -14.7% | 4,617,760 | 1.48 |
| 2026-02-27 | 8,024,004 | -16.6% | 4,449,427 | 1.80 |
| 2026-02-13 | 9,626,806 | +12.1% | 9,335,950 | 1.03 |
| 2026-01-30 | 8,586,518 | +53.8% | 26,259,962 | 1.00 |
| 2026-01-15 | 5,581,301 | -34.2% | 76,410,246 | 1.00 |
| 2025-12-31 | 8,486,867 | +64.3% | 103,206,664 | 1.00 |
| 2025-12-15 | 5,165,878 | +74.5% | 4,757,239 | 1.09 |
| 2025-11-28 | 2,960,462 | +26.3% | 1,188,169 | 2.49 |
| 2025-11-14 | 2,344,025 | +147.9% | 1,323,714 | 1.77 |
| 2025-10-31 | 945,586 | -23.4% | 1,165,846 | 1.00 |
| 2025-10-15 | 1,233,926 | -52.4% | 2,779,702 | 1.00 |
| 2025-09-30 | 2,591,966 | -40.4% | 2,028,737 | 1.28 |
| 2025-09-15 | 4,351,507 | +307.9% | 3,585,144 | 1.21 |
| 2025-08-29 | 1,066,790 | -29.9% | 775,226 | 1.38 |
| 2025-08-15 | 1,522,243 | +4.7% | 1,114,081 | 1.37 |
| 2025-07-31 | 1,454,427 | +57.5% | 2,529,235 | 1.00 |
| 2025-07-15 | 923,422 | +1.7% | 447,616 | 2.06 |
| 2025-06-30 | 908,005 | -14.9% | 752,038 | 1.21 |
| 2025-06-13 | 1,066,859 | -6.6% | 652,742 | 1.63 |
| 2025-05-30 | 1,142,308 | +34.5% | 461,980 | 2.47 |
| 2025-05-15 | 849,404 | -7.1% | 407,488 | 2.08 |
| 2025-04-30 | 914,019 | -13.3% | 288,066 | 3.17 |
| 2025-04-15 | 1,053,568 | -15.3% | 1,788,866 | 1.00 |
| 2025-03-31 | 1,244,231 | +131.2% | 690,629 | 1.80 |
| 2025-03-14 | 538,288 | -41.9% | 628,117 | 1.00 |
| 2025-02-28 | 926,252 | -20.3% | 780,920 | 1.19 |
| 2025-02-14 | 1,161,395 | +106.5% | 1,178,731 | 1.00 |
| 2025-01-31 | 562,563 | +15.7% | 2,380,081 | 1.00 |
| 2025-01-15 | 486,238 | -78.2% | 4,092,328 | 1.00 |
| 2024-12-31 | 2,233,892 | +317.6% | 39,513,102 | 1.00 |
| 2024-12-13 | 534,874 | +76.3% | 817,640 | 1.00 |
| 2024-11-29 | 303,449 | -36.1% | 648,193 | 1.00 |
| 2024-11-15 | 474,751 | -6.0% | 1,325,474 | 1.00 |
| 2024-10-31 | 504,975 | +74.5% | 195,183 | 2.59 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 2 November 2026, the short share of SIDU volume is 53.3%, up 3.1 points over the last five sessions. Over the last 30 readings it ranged from 38.8% (14 October 2026) to 69.4% (12 October 2026). The latest reading is in line with the 30-session average of 54.0%, on 1.6M shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-11-02 | 865K | 1.6M | 53.3% | 5,320 |
| 2026-10-30 | 930K | 1.8M | 51.4% | 2,945 |
| 2026-10-29 | 1.1M | 2.4M | 45.3% | 6,291 |
| 2026-10-28 | 697K | 1.5M | 46.6% | 286 |
| 2026-10-27 | 1.1M | 1.8M | 58.3% | 1,400 |
| 2026-10-26 | 777K | 1.5M | 50.2% | 2,749 |
| 2026-10-23 | 773K | 1.5M | 51.8% | 2,183 |
| 2026-10-22 | 768K | 1.7M | 44.4% | 3,023 |
| 2026-10-21 | 1.0M | 1.8M | 56.8% | 10,525 |
| 2026-10-20 | 944K | 1.8M | 52.3% | 3,148 |
| 2026-10-19 | 1.1M | 1.9M | 58.9% | 1,818 |
| 2026-10-16 | 939K | 1.8M | 51.4% | 13,641 |
| 2026-10-15 | 1.2M | 2.5M | 48.2% | 544 |
| 2026-10-14 | 1.1M | 2.9M | 38.8% | 0 |
| 2026-10-13 | 1.2M | 2.7M | 46.5% | 150 |
| 2026-10-12 | 2.2M | 3.2M | 69.4% | 1,719 |
| 2026-10-09 | 874K | 1.4M | 61.6% | 2,384 |
| 2026-10-08 | 1.1M | 2.1M | 52.6% | 11,066 |
| 2026-10-07 | 1.4M | 2.7M | 52.9% | 18,526 |
| 2026-10-06 | 1.5M | 2.5M | 60.5% | 5,390 |
| 2026-10-05 | 1.5M | 2.6M | 59.7% | 20,778 |
| 2026-10-02 | 1.0M | 2.2M | 46.1% | 9,898 |
| 2026-10-01 | 925K | 1.5M | 60.2% | 36,132 |
| 2026-09-30 | 1.3M | 2.0M | 62.4% | 25,472 |
| 2026-09-29 | 1.4M | 2.5M | 55.5% | 49,731 |
| 2026-09-28 | 1.4M | 2.4M | 59.5% | 17,097 |
| 2026-09-25 | 698K | 1.2M | 57.0% | 4,693 |
| 2026-09-24 | 792K | 1.6M | 49.0% | 20,298 |
| 2026-09-23 | 823K | 1.3M | 62.7% | 2,841 |
| 2026-09-22 | 1.8M | 3.2M | 55.2% | 11,286 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 14 October 2026, the fails-to-deliver balance in SIDU is 6,386 shares, down 30,777 shares over the last settlement date. Over the last 30 readings it ranged from 66 shares (17 September 2026) to 77,892 shares (1 October 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-10-14 | 6,386 | $1.31 | $8K |
| 2026-10-13 | 37,163 | $1.44 | $54K |
| 2026-10-07 | 600 | $1.74 | $1K |
| 2026-10-06 | 1,250 | $1.75 | $2K |
| 2026-10-05 | 49,158 | $1.81 | $89K |
| 2026-10-02 | 13,856 | $1.78 | $25K |
| 2026-10-01 | 77,892 | $1.81 | $141K |
| 2026-09-29 | 837 | $2.01 | $2K |
| 2026-09-25 | 58,881 | $2.07 | $122K |
| 2026-09-23 | 1,003 | $2.13 | $2K |
| 2026-09-22 | 1,172 | $2.07 | $2K |
| 2026-09-18 | 2,431 | $2.02 | $5K |
| 2026-09-17 | 66 | $1.97 | $130 |
| 2026-09-16 | 680 | $1.96 | $1K |
| 2026-09-11 | 3,880 | $2.00 | $8K |
| 2026-09-10 | 19,323 | $2.06 | $40K |
| 2026-09-09 | 1,428 | $2.11 | $3K |
| 2026-09-08 | 889 | $2.07 | $2K |
| 2026-09-04 | 9,631 | $2.12 | $20K |
| 2026-09-03 | 3,344 | $2.15 | $7K |
| 2026-09-02 | 33,589 | $2.12 | $71K |
| 2026-09-01 | 4,915 | $2.17 | $11K |
| 2026-08-31 | 1,563 | $2.21 | $3K |
| 2026-08-28 | 5,046 | $2.33 | $12K |
| 2026-08-26 | 3,368 | $2.27 | $8K |
| 2026-08-25 | 182 | $2.22 | $404 |
| 2026-08-24 | 73,587 | $2.37 | $174K |
| 2026-08-21 | 2,974 | $2.34 | $7K |
| 2026-08-20 | 16,548 | $2.45 | $41K |
| 2026-08-19 | 15,136 | $2.44 | $37K |
Insider trades
SEC Form 4, newest first. JSONNo open-market insider trades were reported for SIDU in the last 90 days. The most recent filings are listed below. Latest filing: SHUMAN JEFFREY S (Director) on 2026-07-01.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-07-01 | SHUMAN JEFFREY S | Director | Exercise or conversion | 17K | $0.00 | $0 | 47K |
| 2026-07-01 | Riera Leonardo | Director | Exercise or conversion | 5K | $0.00 | $0 | 14K |
| 2026-07-01 | Coffey Lavanson | Director | Exercise or conversion | 7K | $0.00 | $0 | 13K |
| 2026-07-01 | Norwood Tiffany Ann | Director | Exercise or conversion | 2K | $0.00 | $0 | 2K |
| 2025-10-01 | SHUMAN JEFFREY S | Director | Exercise or conversion | 2K | $0.00 | $0 | 26K |
| 2025-10-01 | Riera Leonardo | Director | Exercise or conversion | 490 | $0.00 | $0 | 8K |
| 2025-10-01 | Oliver John Cole | Director | Exercise or conversion | 490 | $0.00 | $0 | 7K |
| 2025-10-01 | Kilborne Dana S | Director | Exercise or conversion | 735 | $0.00 | $0 | 9K |
| 2025-10-01 | Coffey Lavanson | Director | Exercise or conversion | 735 | $0.00 | $0 | 4K |
| 2025-08-01 | Riera Leonardo | Director | Exercise or conversion | 7K | $0.00 | $0 | 7K |
| 2025-08-01 | Coffey Lavanson | Director | Exercise or conversion | 3K | $0.00 | $0 | 3K |
| 2025-08-01 | SHUMAN JEFFREY S | Director | Exercise or conversion | 9K | $0.00 | $0 | 24K |
| 2025-08-01 | Oliver John Cole | Director | Exercise or conversion | 7K | $0.00 | $0 | 7K |
| 2025-08-01 | Kilborne Dana S | Director | Exercise or conversion | 8K | $0.00 | $0 | 8K |
| 2025-08-01 | SHUMAN JEFFREY S | Director | Exercise or conversion | 16K | $0.00 | $0 | 31K |
| 2025-08-01 | Riera Leonardo | Director | Exercise or conversion | 9K | $0.00 | $0 | 9K |
| 2025-08-01 | Oliver John Cole | Director | Exercise or conversion | 9K | $0.00 | $0 | 9K |
| 2025-08-01 | Kilborne Dana S | Director | Exercise or conversion | 11K | $0.00 | $0 | 11K |
| 2025-08-01 | Coffey Lavanson | Director | Exercise or conversion | 6K | $0.00 | $0 | 6K |
| 2025-06-12 | SHUMAN JEFFREY S | Director | Buy | 2K | $1.61 | $2K | 15K |
| 2025-06-11 | SHUMAN JEFFREY S | Director | Buy | 13K | $1.65 | $22K | 13K |
| 2025-02-01 | Craig Carol Marlene | CEO | Grant | 135K | $1.43 | $193K | 140K |
| 2024-12-16 | White Billy Joe | CFO | Other transaction | 18K | $1.43 | $25K | 18K |
| 2023-05-17 | Craig Carol Marlene | CEO | Buy | 500K | $0.23 | $115K | 500K |
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. JSON2 holders report 5% or more of SIDU in their latest filing, all on Schedule 13G (passive). The largest reported stake is BlackRock, Inc. at 6.7% of the class (6,479,638 shares), filed 2026-07-30 for an event on 2026-06-30.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-10-30 | 13G | Vanguard Capital Managementinvestment adviser | 5.1M | 5.0% | 2026-09-30 |
| 2026-07-30 | 13G | BlackRock, Inc.parent holding company | 6.5M | 6.7% | 2026-06-30 |
| 2026-04-28 | 13G | Kenneth Griffinparent holding company, individual | 3.2M | 4.0% | 2026-04-21 |
| 2026-04-28 | 13G | Citadel GP LLCparent holding company, other entity | 3.1M | 3.8% | 2026-04-21 |
| 2026-04-28 | 13G | Citadel Advisors LLCinvestment adviser, parent holding company, other entity | 3.1M | 3.8% | 2026-04-21 |
| 2026-04-28 | 13G | Citadel Advisors Holdings LPparent holding company, partnership | 3.1M | 3.8% | 2026-04-21 |
| 2026-04-28 | 13G | Citadel Securities LLCbroker-dealer, other entity | 139K | 0.2% | 2026-04-21 |
| 2026-04-28 | 13G | Citadel Securities GP LLCparent holding company, other entity | 139K | 0.2% | 2026-04-21 |
| 2026-04-28 | 13G | Citadel Securities Group LPparent holding company, partnership | 139K | 0.2% | 2026-04-21 |
| 2026-02-17 | 13G/Ano. 1 | CVI Investments, Inc.corporation | 215K | 0.3% | 2025-12-31 |
| 2026-02-17 | 13G/Ano. 1 | Heights Capital Management, Inc.corporation | 215K | 0.3% | 2025-12-31 |
13F holders
Tracked managers holding SIDU at their latest 13F. JSON4 of the 30 tracked managers held SIDU at their latest 13F, $10.3M in total at quarter-end prices. Citadel Advisors is the largest at $4.9M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 4 added shares and 0 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Citadel Advisors | 2026-06-30 | 1.8M | $4.9M | 0.00% | new |
| Renaissance Technologies | 2026-06-30 | 1.2M | $3.3M | 0.00% | new |
| Millennium Management | 2026-06-30 | 613K | $1.7M | 0.00% | +168K |
| Two Sigma Investments | 2026-06-30 | 132K | $372K | 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
Sidus Space 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 Sidus Space (SIDU), SEC CIK 1879726, listed on Nasdaq. 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 2026-10-14.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 2026-10-30.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 2026-08-14.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 2026-07-01.JSON and CSV
- Company record
- EDGAR filing index for CIK 1879726Ticker, 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 SIDU is sold short?
What is SIDU's daily short volume?
Does SIDU have fails to deliver?
Are SIDU insiders buying or selling?
Who owns 5% or more of SIDU?
Which tracked 13F managers own SIDU?
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.