STAAR SURGICAL CO STAA
COM PAR $0.01 · Common Stock · CUSIP 852312305 · ISIN US8523123052
Company in Monrovia, United States
* 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 ($33.3k this quarter). Holder counts are more reliable. Shares outstanding: 50.1m as of 2026-08-07, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $28.68. Options: 6 managers hold calls ($10.5m notional), 8 hold puts ($10.0m).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 305 |
| Q4 2022 | 277 |
| Q1 2023 | 252 |
| Q2 2023 | 246 |
| Q3 2023 | 220 |
| Q4 2023 | 208 |
| Q1 2024 | 199 |
| Q2 2024 | 225 |
| Q3 2024 | 237 |
| Q4 2024 | 213 |
| Q1 2025 | 186 |
| Q2 2025 | 172 |
| Q3 2025 | 196 |
| Q4 2025 | 201 |
| Q1 2026 | 187 |
| Q2 2026 | 200 |
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 | 118 | 109 |
| Q4 2024 | 95 | 124 |
| Q1 2025 | 96 | 110 |
| Q2 2025 | 86 | 92 |
| Q3 2025 | 108 | 104 |
| Q4 2025 | 88 | 110 |
| Q1 2026 | 87 | 114 |
| Q2 2026 | 104 | 87 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $10.2m | $17.7m | 1.74 |
| Q4 2025 | $11.2m | $28.8m | 2.57 |
| Q1 2026 | $8.9m | $9.9m | 1.12 |
| Q2 2026 | $10.5m | $10.0m | 0.94 |
Biggest buyers
| Madison Avenue Partners, LP | Added | +1.7m |
| Point72 Asset Management, L.P. | Added | +1.6m |
| GOLDMAN SACHS GROUP INC | Added | +1.1m |
| Defilade Capital Management, L.P. | New | +322.1k |
| AI-Squared Management Ltd | Added | +274.3k |
| RENAISSANCE TECHNOLOGIES LLC | Added | +205.2k |
| UBS Group AG | Added | +161.3k |
| BANK OF AMERICA CORP /DE/ | Added | +119.0k |
| JPMORGAN CHASE & CO | Added | +75.0k |
| BlackRock, Inc. | Added | +65.0k |
Biggest sellers
| CITADEL ADVISORS LLC | Reduced | -826.0k |
| Quinn Opportunity Partners LLC | Sold out | -633.3k |
| TWO SIGMA INVESTMENTS, LP | Reduced | -449.3k |
| JANE STREET GROUP, LLC | Reduced | -417.6k |
| Prescott Group Capital Management, L.L.C. | Sold out | -359.7k |
| BRIGHT VALLEY CAPITAL Ltd | Sold out | -272.0k |
| HRT FINANCIAL LP | Sold out | -220.4k |
| Defender Capital, LLC. | Reduced | -213.4k |
| MORGAN STANLEY | Reduced | -183.2k |
| GABELLI FUNDS LLC | Reduced | -170.7k |
Biggest calls
| CITADEL ADVISORS LLC | Added | $4.2m147.3k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $2.9m99.9k shares |
| Walleye Trading LLC | Reduced | $1.3m44.8k shares |
| IMC-Chicago, LLC | Reduced | $1.2m41.1k shares |
| JANE STREET GROUP, LLC | Added | $986.9k34.4k shares |
| SIMPLEX TRADING, LLC | Unchanged | $2.9k100 shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $3.0m102.9k shares |
| UBS Group AG | Unchanged | $1.8m63.0k shares |
| CITADEL ADVISORS LLC | Reduced | $1.5m52.1k shares |
| IMC-Chicago, LLC | Added | $1.3m46.3k shares |
| Walleye Trading LLC | Reduced | $1.1m38.9k shares |
| JANE STREET GROUP, LLC | Added | $1.1m38.6k shares |
| SIMPLEX TRADING, LLC | Reduced | $86.1k3.0k shares |
| GROUP ONE TRADING LLC | Unchanged | $66.0k2.3k 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 |
|---|---|
BROADWOOD PARTNERS, L.P.
13D · may seek influence
+1.5 pts · filed 2026-03-13
Stated purposeThe Reporting Persons are filing this Schedule 13D/A to report a change in their respective beneficial ownership percentages. No material changes have been made to the Reporting Persons' Item 4 disclosure in the 13D/A previously filed on January 16, 2026 (Amendment No. 43), except that Richard T. LeBuhn shall cease to be a Reporting Person immediately upon the filing of this Amendment No. 44 as a result of the termination of the Joint Filing and Solicitation Agreement described in the 13D/A previously filed on January 16, 2026 (Amendment No. 43). The Reporting Persons intend to review their investment in the Issuer on a continuing basis. Depending on various factors including, without limitation, the Issuer's financial position, the price levels of the Shares, conditions in the securiti… Full filing |
32.6% |
| BlackRock, Inc. 13G · institution -3.9 pts · filed 2026-10-27 | 9.2% |
| Madison Avenue Partners, LP 13G · passive investor +2.6 pts · filed 2026-08-14 | 8.4% |
Yunqi Capital Ltd
13D · may seek influence
no change · filed 2026-01-16
Stated purposeOn January 14, 2026, the Issuer entered into a letter agreement (the "Cooperation Agreement") with Broadwood Partners, L.P. pursuant to which the Issuer agreed, among other things, to appoint Christopher Min Fang Wang to its Board of Directors, effective as of the date of the Cooperation Agreement. Full filing |
6.5% |
| ARMISTICE CAPITAL, LLC 13G · institution new · filed 2025-05-15 | 6.1% |
| Point72 Asset Management, L.P. 13G · passive investor new · filed 2026-05-12 | 5.2% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-27)
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 | 0 | — | 0 | — | — |
| Q3 2025 | 0 | — | 0 | — | — |
| Q4 2025 | 0 | — | 0 | — | — |
| Q1 2026 | 1 | $12.3m | 0 | — | — |
| Q2 2026 | 0 | — | 0 | — | — |
| Q3 2026 | 0 | — | 0 | — | — |
None reported since 1 Apr 2026.
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| BROADWOOD CAPITAL INC 24.18% of their portfolio | 16.1m $462.6m | Unchanged |
| BlackRock, Inc. 0.00% of their portfolio | 6.7m $193.1m | Added +65.0k |
| Madison Avenue Partners, LP 5.16% of their portfolio | 4.2m $119.8m | Added +1.7m |
| Yunqi Capital Ltd 74.80% of their portfolio | 3.3m $93.4m | Unchanged |
| Point72 Asset Management, L.P. 0.11% of their portfolio | 2.4m $69.9m | Added +1.6m |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 2.2m $61.7m | Added +1.1m |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio | 2.0m $56.8m | Reduced -144.0k |
| STATE STREET CORP 0.00% of their portfolio | 1.8m $50.8m | Reduced -63.6k |
| Anatole Investment Management Ltd 8.03% of their portfolio | 1.7m $47.4m | Added +50.0k |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 1.6m $44.5m | Reduced -137.9k |
| MORGAN STANLEY 0.00% of their portfolio | 1.3m $37.8m | Reduced -183.2k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 1.1m $30.9m | Added +59.5k |
| Two Seas Capital LP 1.17% of their portfolio | 1.1m $30.5m | Added +27.4k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 867.1k $24.9m | Added +46.4k |
| AMERICAN CAPITAL MANAGEMENT INC 1.09% of their portfolio | 846.7k $24.3m | Reduced -31.4k |
| AI-Squared Management Ltd 8.30% of their portfolio | 542.4k $15.6m | Added +274.3k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 445.7k $12.8m | Added +37.1k |
| Defender Capital, LLC. 4.02% of their portfolio | 431.2k $12.4m | Reduced -213.4k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 423.1k $12.1m | Added +22.9k |
| NORGES BANK 0.00% of their portfolio | 365.2k $10.5m | Not comparable |
| UBS Group AG 0.00% of their portfolio | 341.2k $9.8m | Added +161.3k |
| RENAISSANCE TECHNOLOGIES LLC 0.01% of their portfolio | 340.4k $9.8m | Added +205.2k |
| Defilade Capital Management, L.P. 1.24% of their portfolio | 322.1k $9.2m | New |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 322.0k $9.2m | Reduced -66 |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 242.0k $6.9m | Added +1 |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 233.4k $6.7m | Reduced -826.0k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 229.3k $6.6m | Reduced -2.2k |
| Squarepoint Ops LLC 0.01% of their portfolio | 188.3k $5.4m | Reduced -158.4k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 183.8k $5.3m | Added +119.0k |
| Public Sector Pension Investment Board 0.01% of their portfolio | 171.0k $4.9m | Reduced -6.9k |
| Nuveen, LLC 0.00% of their portfolio | 164.1k $4.7m | Added +26.2k |
| Invesco Ltd. 0.00% of their portfolio | 133.4k $3.8m | Reduced -15.6k |
| Freshford Capital Management, LLC 1.23% of their portfolio | 125.0k $3.6m | Unchanged |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 112.3k $3.3m | Added +75.0k |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 110.3k $3.2m | Reduced -449.3k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 107.4k $3.1m | Added +9.8k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 102.3k $2.9m | Reduced -27.0k |
| Legal & General Group Plc 0.00% of their portfolio | 100.2k $2.9m | Reduced -1.5k |
| ZACKS INVESTMENT MANAGEMENT 0.02% of their portfolio | 82.9k $2.4m | Added +38.6k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 81.6k $2.3m | Reduced -101.5k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 77.9k $2.2m | Reduced -4.1k |
| Linden Thomas Advisory Services, LLC 0.16% of their portfolio | 67.6k $1.9m | Added +31.5k |
| Meros Investment Management, LP 0.59% of their portfolio | 65.0k $1.9m | New |
| Quantinno Capital Management LP 0.00% of their portfolio | 60.8k $1.7m | Added +1.5k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 60.2k $1.7m | Added +8.6k |
| Swiss National Bank 0.00% of their portfolio | 59.7k $1.7m | Reduced -4.3k |
| GABELLI FUNDS LLC 0.01% of their portfolio | 54.7k $1.6m | Reduced -170.7k |
| DARK FOREST CAPITAL MANAGEMENT LP 0.10% of their portfolio | 51.6k $1.5m | New |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 51.0k $953.0k | Reduced -8.0k |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 50.1k $1.4m | Reduced -2.1k |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 49.7k $1.4m | Added +290 |
| INTECH INVESTMENT MANAGEMENT LLC 0.01% of their portfolio | 49.1k $1.4m | New |
| Range Financial Group LLC 0.38% of their portfolio | 49.1k $1.4m | New |
| Corient Private Wealth LP 0.00% of their portfolio | 49.0k $1.4m | Added +771 |
| Y-Intercept (Hong Kong) Ltd 0.03% of their portfolio | 47.3k $1.4m | New |
| CANADA LIFE ASSURANCE Co 0.00% of their portfolio | 39.0k $1.1m | Reduced -2.4k |
| Brevan Howard Capital Management LP 0.02% of their portfolio | 37.7k $1.1m | Added +1.8k |
| BOOTHBAY FUND MANAGEMENT, LLC 0.02% of their portfolio | 37.2k $1.1m | New |
| Headlands Technologies LLC 0.11% of their portfolio | 36.9k $1.1m | Added +5.9k |
| SIERRA SUMMIT ADVISORS LLC 0.12% of their portfolio | 36.5k $1.0m | New |
| GSA CAPITAL PARTNERS LLP 0.07% of their portfolio | 36.3k $1.0m | Added +16.1k |
| OCCUDO QUANTITATIVE STRATEGIES LP 0.05% of their portfolio | 35.4k $1.0m | New |
| CAPITAL FUND MANAGEMENT S.A. 0.01% of their portfolio | 34.7k $994.9k | Added +18.7k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 34.6k $993.4k | Added +15.5k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 33.8k $968.4k | Added +1.9k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 33.6k $965.3k | Added +19.2k |
| Creative Planning 0.00% of their portfolio | 33.2k $951.9k | Added +9.6k |
| Tidal Investments LLC 0.00% of their portfolio | 33.2k $951.6k | New |
| Thrivent Financial for Lutherans 0.00% of their portfolio | 32.7k $938.0k | Reduced -508 |
| GABELLI & Co INVESTMENT ADVISERS, INC. 0.14% of their portfolio | 32.5k $932.4k | Reduced -101.2k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 31.1k $891.5k | Added +18.8k |
| AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio | 29.2k $838.0k | Reduced -232 |
| Jain Global LLC 0.01% of their portfolio | 28.7k $822.4k | New |
| Illinois Municipal Retirement Fund 0.01% of their portfolio | 26.8k $770.1k | New |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 24.9k $715.0k | Reduced -11.7k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 24.6k $704.6k | Reduced -417.6k |
| IMC-Chicago, LLC 0.01% of their portfolio | 23.2k $665.2k | Added +5.1k |
| D. E. Shaw & Co., Inc. 0.00% of their portfolio | 22.0k $631.3k | Reduced -5.8k |
| Louisiana State Employees Retirement System 0.01% of their portfolio | 21.8k $625.4k | Reduced -300 |
| Engineers Gate Manager LP 0.01% of their portfolio | 21.6k $618.3k | New |
| Vanguard Global Advisers, LLC 0.00% of their portfolio | 21.5k $616.1k | Added +2.7k |
| CITIGROUP INC 0.00% of their portfolio | 21.4k $613.5k | Added +14.3k |
| VANGUARD ASSET MANAGEMENT, Ltd 0.00% of their portfolio | 21.3k $611.3k | Unchanged |
| MetLife Investment Management, LLC 0.00% of their portfolio | 19.7k $564.6k | Added +799 |
| FULLER & THALER ASSET MANAGEMENT, INC. 0.00% of their portfolio | 19.1k $549.0k | New |
| Balyasny Asset Management L.P. 0.00% of their portfolio | 18.9k $541.4k | New |
| XTX Topco Ltd 0.01% of their portfolio | 18.4k $528.8k | Reduced -15.6k |
| FMR LLC 0.00% of their portfolio | 17.6k $505.6k | Added +455 |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio | 16.9k $485.8k | Unchanged |
| State of Alaska, Department of Revenue 0.00% of their portfolio | 16.4k $470.0k | Reduced -8.2k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 15.6k $448.6k | Reduced -442 |
| State of Tennessee, Department of Treasury 0.00% of their portfolio | 14.8k $424.3k | Added +3.8k |
| BARCLAYS PLC 0.00% of their portfolio | 14.5k $416.4k | Added +7.9k |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.00% of their portfolio | 13.8k $395.7k | Unchanged |
| Amundi 0.00% of their portfolio | 13.6k $389.5k | Reduced -2.7k |
| Quantbot Technologies LP 0.02% of their portfolio | 13.4k $384.0k | Added +10.6k |
| YOUSIF CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 13.3k $382.4k | Reduced -10 |
| Schonfeld Strategic Advisors LLC 0.00% of their portfolio | 13.2k $377.4k | New |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 13.0k $374.3k | New |
| AMALGAMATED BANK 0.00% of their portfolio | 12.9k $371.0k | Reduced -1.4k |