Repligen Ownership | Who Owns Repligen?
Repligen Ownership Summary
Repligen is owned by 63.56% institutional investors, 5.23% insiders, and 31.20% retail investors. Blackrock is the largest institutional shareholder, holding 13.54% of RGEN shares. iShares Core S&P Mid-Cap ETF is the top mutual fund, with 3.17% of its assets in Repligen shares.
RGEN Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Repligen | 63.56% | 5.23% | 31.20% |
| Sector | Healthcare Stocks | 35.58% | 11.87% | 52.55% |
| Industry | Medical Instruments & Supplies Stocks | 35.51% | 13.37% | 51.13% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock | 7.57M | 13.54% | $954.08M |
| Blackrock funding, inc. /de | 5.99M | 10.66% | $706.10M |
| Vanguard group | 4.99M | 8.88% | $818.31M |
| Price t rowe associates inc /md/ | 4.88M | 8.67% | $574.74M |
| Fmr | 2.89M | 5.13% | $340.12M |
| United capital financial advisers | 2.77M | 4.93% | $326.83M |
| State street | 1.78M | 3.16% | $209.40M |
| Bank of new york mellon | 1.53M | 2.72% | $180.43M |
| Maverick capital | 1.52M | 2.70% | $178.95M |
| Massachusetts financial services co /ma/ | 1.40M | 2.49% | $164.65M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Iron triangle partners lp | 270.00K | 5.13% | $36.09M |
| 12 west capital management lp | 191.23K | 3.80% | $22.53M |
| Vestal point capital, lp | 925.00K | 3.05% | $108.98M |
| Roubaix capital | 54.55K | 3.00% | $6.43M |
| Brown capital management | 170.00K | 2.85% | $20.03M |
| Conestoga capital advisors | 1.10M | 2.58% | $129.34M |
| Blue whale capital llp | 404.20K | 2.26% | $47.62M |
| American capital management | 357.72K | 2.26% | $42.15M |
| Avidity partners management lp | 77.80K | 2.08% | $9.20M |
| Maverick capital | 1.52M | 2.06% | $178.95M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Maverick capital | 1.52M | 2.06% | 1.52M |
| Wasatch advisors lp | 1.24M | 0.97% | 1.24M |
| Vestal point capital, lp | 925.00K | 3.05% | 842.00K |
| T. rowe price investment management | 1.37M | 0.11% | 720.56K |
| Norges bank | 462.09K | 0.01% | 462.09K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Sands capital management | - | - | -1.25M |
| William blair investment management | - | - | -634.99K |
| Millennium management | 22.46K | 0.00% | -628.09K |
| Blackrock funding, inc. /de | 5.99M | 0.01% | -626.22K |
| Marshall wace, llp | - | - | -516.34K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Maverick capital | 1.52M | 2.06% | 1.52M | $178.95M |
| Wasatch advisors lp | 1.24M | 0.97% | 1.24M | $146.51M |
| Norges bank | 462.09K | 0.01% | 462.09K | $75.72M |
| Pointstate capital lp | 409.50K | 0.82% | 409.50K | $54.74M |
| Vanguard fiduciary trust | 330.77K | 0.01% | 330.77K | $38.97M |
Sold Out
| Holder | Change |
|---|---|
| Financial management professionals | -1.00 |
| True wealth design | -1.00 |
| Claris advisors, llc / mo / | -1.00 |
| Financial gravity asset management | -1.00 |
| Tfc financial management | -1.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 336 | -30.86% | 35,744,636 | -42.77% | 63 | 0.51% | 166 | -32.79% | 97 | -33.10% |
| Dec 31, 2025 | 370 | -21.94% | 40,110,060 | -33.38% | 71 | 0.62% | 187 | -20.09% | 105 | -30.92% |
| Sep 30, 2025 | 456 | 2.01% | 59,758,880 | 6.45% | 106 | 1.07% | 225 | 12.50% | 147 | -11.98% |
| Jun 30, 2025 | 445 | -2.20% | 58,196,365 | 1.11% | 103 | 0.98% | 198 | -13.54% | 167 | 27.48% |
| Mar 31, 2025 | 19 | -95.77% | 3,210,158 | -94.33% | 5 | 0.06% | 5 | -97.49% | 12 | -92.41% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| iShares Core S&P Mid-Cap ETF | 1.79M | 3.17% | -896.00 |
| Vanguard Total Stock Mkt Idx Inv | 1.71M | 3.04% | 4.37K |
| Vanguard US Total Market Shares ETF | 1.68M | 2.99% | 1.32K |
| US Small-Cap Growth II Equity Comp | 1.26M | 2.23% | 319.34K |
| T. Rowe Price New Horizons | 1.26M | 2.23% | 320.30K |
| Vanguard Small Cap Index | 1.23M | 2.19% | -2.36K |
| Sands Capital Global Growth Equity | 1.14M | 2.02% | -41.08K |
| MFS Mid Cap Growth Equity | 862.37K | 1.53% | 39.40K |
| MFS Mid Cap Growth A | 862.37K | 1.53% | - |
| Delaware Ivy Mid Cap Growth A | 805.66K | 1.44% | - |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Apr 21, 2026 | Loeillot Olivier | Chief Executive Officer | Sell | $536.48K |
| Dec 17, 2025 | DAWES KAREN A | - | Sell | $44.27K |
| Nov 25, 2025 | Loeillot Olivier | Chief Executive Officer | Sell | $1.20M |
| Nov 18, 2025 | Bylund James | Chief Operating Officer | Sell | $331.30K |
| Nov 13, 2025 | Hunt Anthony | - | Sell | $385.80K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q2 | - | 1 |
| 2026 Q1 | - | - |
| 2025 Q4 | - | 15 |
| 2025 Q3 | 1 | 6 |
| 2025 Q2 | - | 5 |
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