Sidus Space, Inc. (SIDU) Ownership
SIDU ownership summary
as of October 18, 2026- Institutions
- 30.2% of shares outstanding
- Insiders
- 0.03% of shares outstanding
- Shares outstanding
- 101.1M
- Float
- 101.0M shares available to trade
- Short interest
- 18.01% 18.2M shares short
- Days to cover
- 4.94 short interest up 8.9% vs prior month
- Institutions 30.18%
- Insiders 0.03%
- Other investors 69.79%
SIDU top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 7.93% | 8.0M | $9.6M | +7.4M (+1,136.1%) | June 30, 2026 |
| 2 | Vanguard Capital Management, LLC | 3.56% | 3.6M | $4.3M | +242,594 (+7.2%) | June 30, 2026 |
| 3 | Vanguard Portfolio Management, LLC | 2.01% | 2.0M | $2.4M | +2.0M (0.0%) | June 30, 2026 |
| 4 | Geode Capital Management, LLC | 1.99% | 2.0M | $2.4M | +1.3M (+167.3%) | June 30, 2026 |
| 5 | Citadel Advisors Llc | 1.73% | 1.8M | $2.1M | +1.8M (0.0%) | June 30, 2026 |
| 6 | State Street Corp | 1.66% | 1.7M | $2.0M | +1.4M (+448.2%) | June 30, 2026 |
| 7 | Renaissance Technologies Corp | 1.16% | 1.2M | $1.4M | +1.2M (0.0%) | June 30, 2026 |
| 8 | UBS Group AG | 0.77% | 775K | $922,771 | +303,066 (+64.2%) | June 30, 2026 |
| 9 | Northern Trust Corp | 0.64% | 644K | $766,245 | +501,035 (+350.7%) | June 30, 2026 |
| 10 | Nuveen, LLC | 0.61% | 619K | $737,181 | +619,480 (0.0%) | June 30, 2026 |
| 11 | Penserra Capital Management, LLC | 0.61% | 616K | $733,424 | +253,148 (+69.7%) | June 30, 2026 |
| 12 | Millennium Management LLC | 0.61% | 613K | $729,706 | +167,970 (+37.7%) | June 30, 2026 |
| 13 | The Goldman Sachs Group Inc | 0.59% | 593K | $706,151 | +451,420 (+317.9%) | June 30, 2026 |
| 14 | Vanguard Fiduciary Trust Co | 0.56% | 565K | $672,418 | +185,126 (+48.7%) | June 30, 2026 |
| 15 | Susquehanna International Group, LLP | 0.44% | 445K | $529,577 | +445,023 (0.0%) | June 30, 2026 |
| 16 | Group One Trading, LLC | 0.37% | 374K | $444,770 | +330,396 (+762.0%) | June 30, 2026 |
| 17 | Charles Schwab Investment Management Inc | 0.26% | 261K | $310,050 | +260,546 (0.0%) | June 30, 2026 |
| 18 | Legacy Capital Group California, Inc. | 0.23% | 235K | $280,116 | +235,392 (0.0%) | June 30, 2026 |
| 19 | AlphaCentric Advisors, LLC | 0.20% | 200K | $238,000 | — | June 30, 2026 |
| 20 | XTX Topco Ltd | 0.20% | 199K | $236,779 | +198,974 (0.0%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 19 holders added 19.2M shares and 0 cut 0.
SIDU top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | iShares Russell 2000 ETF | 2.59% | 2.6M | $3.1M | −30,272 (−1.1%) | September 30, 2026 |
| 2 | Vanguard MStar Total Stk Mkt Idx Invest | 2.57% | 2.6M | $3.1M | — | August 31, 2026 |
| 3 | Vanguard Explorer Inv | 1.07% | 1.1M | $1.3M | +1.1M (0.0%) | June 30, 2026 |
| 4 | iShares Russell 2000 Growth ETF | 0.94% | 955K | $1.1M | −1,209 (−0.1%) | September 30, 2026 |
| 5 | Fidelity Small Cap Index | 0.89% | 903K | $1.1M | +10,844 (+1.2%) | July 31, 2026 |
| 6 | MetaSpace Fund A | 0.84% | 850K | $1.0M | −350,000 (−29.2%) | August 31, 2026 |
| 7 | BlackRock Advantage Small Cap Core Instl | 0.67% | 683K | $812,828 | −194,394 (−22.2%) | August 31, 2026 |
| 8 | Nuveen Equity Index R6 | 0.50% | 510K | $607,144 | — | August 31, 2026 |
| 9 | Vanguard Russell 2000 ETF | 0.47% | 475K | $564,864 | +13,206 (+2.9%) | August 31, 2026 |
| 10 | Fidelity Extended Market Index | 0.41% | 412K | $490,342 | +15,066 (+3.8%) | August 31, 2026 |
| 11 | Procure Space ETF | 0.39% | 397K | $471,996 | +2,337 (+0.6%) | September 30, 2026 |
| 12 | iShares Micro-Cap ETF | 0.32% | 323K | $384,706 | −2,230 (−0.7%) | September 30, 2026 |
| 13 | Vanguard VIF Small Co Gr | 0.23% | 235K | $279,078 | +234,519 (0.0%) | June 30, 2026 |
| 14 | Schwab Small Cap Index | 0.20% | 201K | $238,650 | — | August 31, 2026 |
| 15 | AlphaCentric Robotics and Automation I | 0.20% | 200K | $238,000 | — | June 30, 2026 |
| 16 | Stt Strt SPDR® Russell2000 US SmCapETF | 0.16% | 163K | $194,337 | +7,808 (+5.0%) | August 31, 2026 |
| 17 | Fidelity Total Market Index | 0.15% | 155K | $184,620 | +5,746 (+3.8%) | August 31, 2026 |
| 18 | iShares Russell 2000 Small-Cap Idx Instl | 0.15% | 154K | $183,329 | — | August 31, 2026 |
| 19 | Vanguard US Momentum Factor ETF | 0.14% | 144K | $171,938 | +144,486 (0.0%) | June 30, 2026 |
| 20 | EQ/Small Company Index IB | 0.14% | 137K | $163,078 | — | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
SIDU insider transactions
latest 1| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2023-05-17 | Carol Marlene Craig | Buy | $23.00 | 5,000 | $115,000 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
SIDU shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns SIDU
Institutional investors own 30.2% of Sidus Space's shares and insiders 0.03%. The largest holder is BlackRock Inc with 7.93% of the shares (8.0M), as of June 30, 2026. Among the top 20 institutions, 19 added shares and 0 reduced their stake in the latest filings. Short interest is 18.01% of the float, or 4.94 days of average trading volume. The share count rose 65,324.1% since 2020.
Related: SIDU analyst forecast, SIDU key metrics. See the SIDU stock overview for the latest quote and news.
SIDU ownership FAQ
Who owns the most Sidus Space stock?
The largest shareholders of Sidus Space are BlackRock Inc (7.93%), Vanguard Capital Management, LLC (3.56%), Vanguard Portfolio Management, LLC (2.01%), Geode Capital Management, LLC (1.99%), Citadel Advisors Llc (1.73%).
What percentage of Sidus Space is owned by institutions?
Institutions hold 30.2% of Sidus Space's shares outstanding; insiders hold 0.03%.
Which funds own Sidus Space?
The largest fund holders of Sidus Space are iShares Russell 2000 ETF (2.59%), Vanguard MStar Total Stk Mkt Idx Invest (2.57%), Vanguard Explorer Inv (1.07%), iShares Russell 2000 Growth ETF (0.94%), Fidelity Small Cap Index (0.89%).
What is Sidus Space's short interest?
18.2M shares of Sidus Space were sold short, 18.01% of the float; at the average daily volume it would take 4.94 days to cover.
Are insiders buying or selling Sidus Space?
Of the latest 1 reported insider transactions in Sidus Space (since May 17, 2023), 1 were purchases and 0 were sales.
How many shares of Sidus Space are outstanding?
Sidus Space has 101.1M shares outstanding, of which 101.0M are in the public float.