Sidus Space, Inc.
Sidus Space, Inc. (SIDU) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · SIDU · as of Sep 30, 2025
Ownership Breakdown
21
Institutional Holders
$1.06M
Total Inst. Value
▼ $225,398 vs Q2
36.89M
Shares Outstanding
freeFloat 99.66%
1.02M
13F Shares Held
▲ 277,921 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
SIDU largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC radiotelephone communications | 562.6K | 3.07% | 3.07% | $585.13M | Nov 7, 2025 | ▲ 364.1K |
GEODE CAPITAL MANAGEMENT, LLC radiotelephone communications | 235.9K | 1.29% | 1.29% | $245.38M | Nov 12, 2025 | ▲ 115.1K |
GOLDMAN SACHS GROUP INC radiotelephone communications | 36.8K | 20.11% | 20.11% | $38.31M | Nov 14, 2025 | NEW |
BANK OF MONTREAL /CAN/ radiotelephone communications | 35.0K | 19.10% | 19.10% | $36.40M | Nov 13, 2025 | — held |
STATE STREET CORP radiotelephone communications | 30.8K | 16.80% | 16.80% | $32.00M | Nov 14, 2025 | — held |
QUADRATURE CAPITAL LTD radiotelephone communications | 28.3K | 15.46% | 15.46% | $29.03M | Nov 13, 2025 | NEW |
JANE STREET GROUP, LLC radiotelephone communications | 24.2K | 13.22% | 13.22% | $25.18M | Nov 14, 2025 | ▼ 30.8K |
NORTHERN TRUST CORP radiotelephone communications | 22.7K | 12.38% | 12.38% | $23.59M | Nov 14, 2025 | — held |
CETERA INVESTMENT ADVISERS radiotelephone communications | 12.1K | 6.60% | 6.60% | $12.57M | Nov 14, 2025 | NEW |
ENGINEERS GATE MANAGER LP radiotelephone communications | 10.9K | 5.94% | 5.94% | $11.31M | Nov 14, 2025 | ▼ 785 |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
5
Increased
+480.2K shares7
New Positions
first time holders4
Decreased
−84.3K shares6
Sold Out
fully exitedNet shares change (top 50)
+395.8K
+480.2K / −84.3K
Net new holders
+2
7 new / 6 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
SIDU insider trading · insider activity
Source: SEC Form 4
5
Buy transactions
5
Sell transactions
1.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
No recent insider transactions reported.
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Sidus Space, Inc. (SIDU) is primarily owned by institutional investors, who hold approximately 2.8% of total shares outstanding. Company insiders own approximately 0.34%, while retail and public investors account for the remaining 96.88%.
The largest institutional shareholder of Sidus Space, Inc. is VANGUARD GROUP INC, holding approximately 562,628 shares — equal to 3.07% of outstanding shares — as of September 30, 2025.
A total of 21 institutional investors currently hold SIDU stock, with a combined institutional value of approximately $1,063,298 as of the most recent 13F filing period.
Frequently asked questions
SIDU ownershipSidus Space, Inc. (SIDU) is primarily owned by institutional investors, who hold approximately 2.8% of shares. The largest shareholder is VANGUARD GROUP INC with a 3.07% stake. Company insiders hold 0.34%. Data sourced from SEC Form 13F as of September 30, 2025.