Coya Therapeutics, Inc. (COYA) Ownership
COYA ownership summary
as of October 17, 2026- Institutions
- 33.3% of shares outstanding
- Insiders
- 14.69% of shares outstanding
- Shares outstanding
- 23.5M
- Float
- 17.5M shares available to trade
- Short interest
- 5.13% 1.2M shares short
- Days to cover
- 8.48 short interest up 0.3% vs prior month
- Institutions 33.25%
- Insiders 14.69%
- Other investors 52.06%
COYA top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard Capital Management, LLC | 3.59% | 842K | $3.6M | −2,693 (−0.3%) | June 30, 2026 |
| 2 | Alyeska Investment Group, L.P. | 3.41% | 800K | $3.4M | — | June 30, 2026 |
| 3 | AIGH Capital Management, LLC | 2.69% | 632K | $2.7M | −343,492 (−35.2%) | June 30, 2026 |
| 4 | CM Management, LLC | 1.71% | 400K | $1.7M | +25,000 (+6.7%) | June 30, 2026 |
| 5 | Private Management Group Inc | 1.64% | 384K | $1.6M | +15,121 (+4.1%) | June 30, 2026 |
| 6 | Marshall Wace Asset Management Ltd | 1.06% | 250K | $1.1M | +24,001 (+10.6%) | June 30, 2026 |
| 7 | Geode Capital Management, LLC | 0.97% | 228K | $970,033 | −5,159 (−2.2%) | June 30, 2026 |
| 8 | Renaissance Technologies Corp | 0.82% | 193K | $820,190 | +89,022 (+85.6%) | June 30, 2026 |
| 9 | Prosight Management, LP | 0.72% | 170K | $722,500 | −250,360 (−59.6%) | June 30, 2026 |
| 10 | Dimensional Fund Advisors, Inc. | 0.66% | 156K | $662,647 | +59,998 (+62.6%) | June 30, 2026 |
| 11 | Vanguard Fiduciary Trust Co | 0.55% | 130K | $550,592 | −10,335 (−7.4%) | June 30, 2026 |
| 12 | JONES FINANCIAL COMPANIES LLLP | 0.47% | 111K | $471,368 | +65,950 (+146.7%) | June 30, 2026 |
| 13 | BlackRock Inc | 0.44% | 102K | $435,234 | +19,639 (+23.7%) | June 30, 2026 |
| 14 | Springbok Capital Management, LLC | 0.43% | 101K | $430,652 | — | June 30, 2026 |
| 15 | JBF Capital, Inc. | 0.43% | 100K | $425,026 | — | June 30, 2026 |
| 16 | Royal Bank of Canada | 0.40% | 93K | $397,010 | +80,022 (+597.5%) | June 30, 2026 |
| 17 | Morgan Stanley - Brokerage Accounts | 0.35% | 82K | $348,950 | −3,594 (−4.2%) | June 30, 2026 |
| 18 | State Street Corp | 0.34% | 80K | $339,205 | — | June 30, 2026 |
| 19 | 683 Capital Management LLC | 0.30% | 70K | $297,500 | −10,128 (−12.6%) | March 31, 2026 |
| 20 | Susquehanna International Group, LLP | 0.26% | 61K | $259,276 | +21,690 (+55.2%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 9 holders added 400K shares and 7 cut 626K.
COYA top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard MStar Total Stk Mkt Idx Invest | 2.56% | 601K | $2.6M | — | August 31, 2026 |
| 2 | Fidelity Extended Market Index | 0.47% | 109K | $464,461 | +3,885 (+3.7%) | August 31, 2026 |
| 3 | Dimensional US Small Cap ETF | 0.32% | 76K | $321,122 | — | September 30, 2026 |
| 4 | iShares Micro-Cap ETF | 0.27% | 63K | $267,202 | −434 (−0.7%) | September 30, 2026 |
| 5 | DFA US Micro Cap I | 0.16% | 39K | $163,723 | +1,365 (+3.7%) | August 31, 2026 |
| 6 | Fidelity Series Total Market Index | 0.14% | 32K | $137,543 | — | August 31, 2026 |
| 7 | Fidelity Total Market Index | 0.13% | 31K | $132,311 | — | August 31, 2026 |
| 8 | DFA US Small Cap I | 0.06% | 13K | $55,705 | — | August 31, 2026 |
| 9 | Avantis US Small Cap Equity ETF | 0.05% | 11K | $47,676 | — | September 30, 2026 |
| 10 | Vanguard Balanced Index Inv | 0.05% | 11K | $46,334 | — | August 31, 2026 |
| 11 | Vanguard MStar Inst Ttl StkMktIdxInstlPl | 0.04% | 10K | $43,546 | — | August 31, 2026 |
| 12 | Schwab Total Stock Market Index | 0.04% | 10K | $42,500 | — | August 31, 2026 |
| 13 | Fidelity Nasdaq Composite Index | 0.03% | 6,896 | $29,308 | −7,996 (−53.7%) | August 31, 2026 |
| 14 | Vanguard U.S. Eq Idx £ Acc | 0.03% | 5,879 | $24,986 | — | August 31, 2026 |
| 15 | Dimensional US Vector Equity ETF | 0.02% | 4,793 | $20,370 | — | September 24, 2026 |
| 16 | 1290 VT Micro Cap K | 0.02% | 4,435 | $18,849 | — | August 31, 2026 |
| 17 | Dimensional International Core Eq Acc | 0.02% | 4,192 | $17,816 | — | August 31, 2026 |
| 18 | Dimensional World Equity GBP Acc | 0.02% | 3,807 | $16,180 | — | August 31, 2026 |
| 19 | DFA US Vector Equity Class F | 0.02% | 3,576 | $15,198 | +3,576 (0.0%) | July 31, 2026 |
| 20 | DFA US Vector Equity I | 0.01% | 3,506 | $14,900 | — | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
COYA insider transactions
latest 3| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2024-11-14 | David S Snyder | Buy | $7.19 | 1,800 | $12,942 |
| 2024-11-11 | Arun Swaminathan | Buy | $7.34 | 5,000 | $36,700 |
| 2024-11-11 | Fred Grossman | Buy | $7.37 | 2,710 | $19,973 |
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.
COYA shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns COYA
Institutional investors own 33.3% of Coya Therapeutics's shares and insiders 14.69%. The largest holder is Vanguard Capital Management, LLC with 3.59% of the shares (842K), as of June 30, 2026. Among the top 20 institutions, 9 added shares and 7 reduced their stake in the latest filings. Short interest is 5.13% of the float, or 8.48 days of average trading volume. The share count rose 153.4% since 2021.
Related: COYA analyst forecast, COYA key metrics. See the COYA stock overview for the latest quote and news.
COYA ownership FAQ
Who owns the most Coya Therapeutics stock?
The largest shareholders of Coya Therapeutics are Vanguard Capital Management, LLC (3.59%), Alyeska Investment Group, L.P. (3.41%), AIGH Capital Management, LLC (2.69%), CM Management, LLC (1.71%), Private Management Group Inc (1.64%).
What percentage of Coya Therapeutics is owned by institutions?
Institutions hold 33.3% of Coya Therapeutics's shares outstanding; insiders hold 14.69%.
Which funds own Coya Therapeutics?
The largest fund holders of Coya Therapeutics are Vanguard MStar Total Stk Mkt Idx Invest (2.56%), Fidelity Extended Market Index (0.47%), Dimensional US Small Cap ETF (0.32%), iShares Micro-Cap ETF (0.27%), DFA US Micro Cap I (0.16%).
What is Coya Therapeutics's short interest?
1.2M shares of Coya Therapeutics were sold short, 5.13% of the float; at the average daily volume it would take 8.48 days to cover.
Are insiders buying or selling Coya Therapeutics?
Of the latest 3 reported insider transactions in Coya Therapeutics (since November 11, 2024), 3 were purchases and 0 were sales.
How many shares of Coya Therapeutics are outstanding?
Coya Therapeutics has 23.5M shares outstanding, of which 17.5M are in the public float.