SIDUS SPACE INC SIDU
CL A COM NEW · Common Stock · CUSIP 826165201
American space company
- SectorCommunication
- IndustryRadiotelephone Communications
- HeadquartersCape Canaveral, FL
- Websitesidusspace.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Implied quarter-end price ≈ $2.81. Options: 6 managers hold calls ($6.9m notional), 8 hold puts ($10.5m).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q4 2023 | 15 |
| Q1 2024 | 15 |
| Q2 2024 | 12 |
| Q3 2024 | 11 |
| Q4 2024 | 23 |
| Q1 2025 | 22 |
| Q2 2025 | 22 |
| Q3 2025 | 21 |
| Q4 2025 | 49 |
| Q1 2026 | 59 |
| Q2 2026 | 107 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 2 | 5 |
| Q4 2024 | 17 | 2 |
| Q1 2025 | 14 | 10 |
| Q2 2025 | 14 | 10 |
| Q3 2025 | 12 | 10 |
| Q4 2025 | 41 | 4 |
| Q1 2026 | 44 | 28 |
| Q2 2026 | 95 | 20 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $0 | $0 | — |
| Q4 2025 | $0 | $0 | — |
| Q1 2026 | $3.2m | $1.8m | 0.56 |
| Q2 2026 | $6.9m | $10.5m | 1.51 |
Biggest buyers
| BlackRock, Inc. | Added | +7.4m |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New | +2.0m |
| CITADEL ADVISORS LLC | New | +1.8m |
| STATE STREET CORP | Added | +1.4m |
| GEODE CAPITAL MANAGEMENT, LLC | Added | +1.3m |
| RENAISSANCE TECHNOLOGIES LLC | New | +1.2m |
| Nuveen, LLC | New | +619.5k |
| NORTHERN TRUST CORP | Added | +501.0k |
| GOLDMAN SACHS GROUP INC | Added | +451.4k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | +445.0k |
Biggest sellers
| Foundations Investment Advisors, LLC | Sold out | -269.8k |
| SLT Holdings LLC | Sold out | -269.8k |
| DNB Asset Management AS | Sold out | -140.6k |
| Squarepoint Ops LLC | Sold out | -133.4k |
| Virtu Financial LLC | Sold out | -51.3k |
| Hudson Bay Capital Management LP | Sold out | -41.3k |
| Qube Research & Technologies Ltd | Sold out | -36.2k |
| Quantbot Technologies LP | Sold out | -32.0k |
| MARSHALL WACE, LLP | Sold out | -30.6k |
| Brevan Howard Capital Management LP | Sold out | -30.0k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $4.0m1.4m shares |
| JANE STREET GROUP, LLC | Added | $939.9k334.5k shares |
| CITADEL ADVISORS LLC | Added | $743.5k264.6k shares |
| IMC-Chicago, LLC | New | $494.0k175.8k shares |
| SIMPLEX TRADING, LLC | Added | $363.9k129.5k shares |
| GROUP ONE TRADING LLC | Added | $360.2k128.2k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $3.0m1.1m shares |
| Caption Management, LLC | New | $2.8m1.0m shares |
| CITADEL ADVISORS LLC | Added | $1.3m475.1k shares |
| JANE STREET GROUP, LLC | Added | $870.3k309.7k shares |
| SABBY MANAGEMENT, LLC | Added | $816.3k2.9k shares |
| IMC-Chicago, LLC | New | $682.8k243.0k shares |
| SIMPLEX TRADING, LLC | Added | $583.6k207.7k shares |
| GROUP ONE TRADING LLC | Added | $329.6k117.3k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BlackRock, Inc. 13G · institution new · filed 2026-07-30 | 6.7% |
Fell to 5% or below in the last year: VANGUARD CAPITAL MANAGEMENT LLC (4.2%, 2026-07-31), CITADEL ADVISORS LLC (4.0%, 2026-04-28), CVI Investments, Inc. (0.3%, 2026-02-17)
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 0 | — | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 1 | $24.7k | 0 | — | — |
| Q3 2025 | 0 | — | 0 | — | — |
| Q4 2025 | 0 | — | 0 | — | — |
| Q1 2026 | 0 | — | 0 | — | — |
| Q2 2026 | 0 | — | 0 | — | — |
| Q3 2026 | 0 | — | 0 | — | — |
None reported since 1 Apr 2026.
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.00% of their portfolio | 8.0m $22.6m | Added +7.4m |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 3.6m $10.1m | Added +242.6k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio | 2.0m $5.7m | New |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 2.0m $5.7m | Added +1.3m |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 1.8m $4.9m | New |
| STATE STREET CORP 0.00% of their portfolio | 1.7m $4.7m | Added +1.4m |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 1.2m $3.3m | New |
| UBS Group AG 0.00% of their portfolio | 775.4k $2.2m | Added +303.1k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 643.9k $1.8m | Added +501.0k |
| Nuveen, LLC 0.00% of their portfolio | 619.5k $1.7m | New |
| Penserra Capital Management LLC 0.01% of their portfolio | 616.3k $1.7m | Added +253.1k |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 613.2k $1.7m | Added +168.0k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 593.4k $1.7m | Added +451.4k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 565.1k $1.6m | Added +185.1k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 445.0k $1.3m | New |
| GROUP ONE TRADING LLC 0.03% of their portfolio | 373.8k $1.1m | Added +330.4k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 260.5k $732.1k | New |
| Legacy Capital Group California, Inc. 0.20% of their portfolio | 235.4k $661.5k | New |
| AlphaCentric Advisors LLC 0.48% of their portfolio | 200.0k $562.0k | Unchanged |
| XTX Topco Ltd 0.01% of their portfolio | 199.0k $559.1k | New |
| Bank of New York Mellon Corp 0.00% of their portfolio | 173.4k $487.2k | New |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 144.6k $406.2k | Added +143.6k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 141.1k $396.8k | New |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 137.0k $317.9k | New |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 132.3k $371.7k | New |
| IMC-Chicago, LLC 0.00% of their portfolio | 101.0k $283.9k | New |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 100.3k $281.9k | New |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 94.7k $266.2k | Added +17.9k |
| MORGAN STANLEY 0.00% of their portfolio | 88.2k $247.9k | Added +69.5k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 82.1k $230.6k | New |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 67.6k $191.0k | New |
| CITIGROUP INC 0.00% of their portfolio | 66.0k $185.4k | Added +39.4k |
| LPL Financial LLC 0.00% of their portfolio | 62.2k $174.7k | Added +48.8k |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 53.3k $149.7k | Added +11.3k |
| MetLife Investment Management, LLC 0.00% of their portfolio | 51.9k $145.7k | New |
| NewEdge Advisors, LLC 0.00% of their portfolio | 51.6k $145.1k | New |
| BRASADA CAPITAL MANAGEMENT, LP 0.03% of their portfolio | 50.0k $140.5k | New |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 46.5k $130.6k | Added +38.4k |
| Invesco Ltd. 0.00% of their portfolio | 44.8k $125.8k | New |
| SABBY MANAGEMENT, LLC 1.01% of their portfolio | 43.4k $121.9k | New |
| SIMPLEX TRADING, LLC 0.00% of their portfolio | 42.8k $120.2k | New |
| BANK OF MONTREAL /CAN/ 0.00% of their portfolio | 39.2k $110.2k | Reduced -21.5k |
| BARCLAYS PLC 0.00% of their portfolio | 39.2k $110.1k | Added +38.1k |
| Vanguard Global Advisers, LLC 0.00% of their portfolio | 37.3k $104.9k | Added +17.9k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 34.2k $98.1k | New |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 31.9k $89.6k | Added +2.9k |
| nVerses Capital, LLC 0.12% of their portfolio | 27.8k $78.2k | New |
| Dynamic Advisor Solutions LLC 0.00% of their portfolio | 26.2k $73.6k | New |
| KPP Advisory Services LLC 0.01% of their portfolio | 25.3k $71.1k | Added +5.5k |
| Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio | 24.3k $68.3k | New |
| SBI Securities Co., Ltd. 0.00% of their portfolio | 22.5k $63.3k | Added +13.2k |
| INTECH INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 21.8k $61.4k | New |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 21.6k $60.7k | New |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC 0.00% of their portfolio | 21.1k $45.7k | New |
| Arax Advisory Partners 0.00% of their portfolio | 20.0k $56.2k | New |
| Cetera Investment Advisers 0.00% of their portfolio | 17.0k $47.8k | Added +4.3k |
| STRS OHIO 0.00% of their portfolio | 16.2k $45.5k | New |
| PFG Investments, LLC 0.00% of their portfolio | 16.0k $45.0k | New |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 15.4k $43.3k | New |
| PEAK6 LLC 0.00% of their portfolio | 15.0k $42.2k | New |
| Trivium Point Advisory, LLC 0.00% of their portfolio | 15.0k $42.1k | New |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 14.3k $40.2k | New |
| Global Retirement Partners, LLC 0.00% of their portfolio | 14.0k $39.3k | First filing |
| KINGSWOOD WEALTH ADVISORS, LLC 0.00% of their portfolio | 12.5k $35.1k | New |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 12.4k $34.9k | New |
| Weinberger Asset Management, Inc 0.01% of their portfolio | 12.2k $21.4k | New |
| Resurgent Financial Advisors LLC 0.01% of their portfolio | 12.0k $33.7k | Unchanged |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 11.6k $32.5k | New |
| J. Derek Lewis & Associates Inc. 0.01% of their portfolio | 11.4k $31.9k | New |
| Vanguard Personalized Indexing Management, LLC 0.00% of their portfolio | 11.2k $31.5k | New |
| State of Wyoming 0.00% of their portfolio | 11.2k $31.4k | New |
| Elequin Capital, LP 0.00% of their portfolio | 11.1k $31.2k | Added +10.5k |
| TWO SIGMA SECURITIES, LLC 0.00% of their portfolio | 11.0k $31.0k | Reduced -22 |
| ProShare Advisors LLC 0.00% of their portfolio | 10.8k $30.3k | New |
| RWA WEALTH PARTNERS, LLC 0.00% of their portfolio | 10.0k $28.1k | New |
| Sovereign Financial Group, Inc. 0.00% of their portfolio | 10.0k $28.1k | Unchanged |
| Legal & General Group Plc 0.00% of their portfolio | 8.0k $22.4k | New |
| Ameritas Investment Partners, Inc. 0.00% of their portfolio | 7.5k $21.0k | New |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 6.6k $18.5k | New |
| JONES FINANCIAL COMPANIES LLLP 0.00% of their portfolio | 5.5k $14.3k | Added +373 |
| Integrated Wealth Concepts LLC 0.00% of their portfolio | 5.3k $15.0k | New |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 5.1k $14.3k | New |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 4.9k $14.0k | New |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 4.6k $12.8k | Reduced -20.8k |
| Grove Bank & Trust 0.00% of their portfolio | 3.0k $8.4k | New |
| Federation des caisses Desjardins du Quebec 0.00% of their portfolio | 2.8k $7.8k | New |
| FMR LLC 0.00% of their portfolio | 2.4k $6.8k | Added +2.4k |
| Steward Partners Investment Advisory, LLC 0.00% of their portfolio | 1.8k $5.1k | Added +621 |
| SIGNATUREFD, LLC 0.00% of their portfolio | 1.6k $4.6k | Added +100 |
| NFSG Corp 0.00% of their portfolio | 1.5k $4.2k | New |
| Quaker Wealth Management, LLC 0.00% of their portfolio | 1.2k $3.4k | New |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 1.1k $3.2k | New |
| IFP Advisors, Inc 0.00% of their portfolio | 1.0k $2.8k | New |
| Golden State Wealth Management, LLC 0.00% of their portfolio | 1.0k $2.8k | Unchanged |
| MCGUIRE CAPITAL ADVISORS INC 0.00% of their portfolio | 1.0k $2.8k | Unchanged |
| Vermillion Wealth Management, Inc. 0.00% of their portfolio | 800 $2.2k | New |
| Avion Wealth 0.00% of their portfolio | 699 $1.0k | Unchanged |
| Triumph Capital Management 0.00% of their portfolio | 575 $1.6k | New |
| SALEM INVESTMENT COUNSELORS INC 0.00% of their portfolio | 500 $1.4k | New |
| Concord Wealth Partners 0.00% of their portfolio | 500 $1.4k | New |