REPLIGEN CORP (RGEN) Institutional Shareholders
REPLIGEN CORP (RGEN) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $8.81B in RGEN holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of RGEN tracked by InsiderSet, reporting ownership valued at approximately $734.72M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $959.54M, representing an estimated gain of +30.60% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 39% of the total disclosed RGEN value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Fmr Llc, United Capital Financial Advisors, Llc, and several other long-term asset managers with concentrated positions in REPLIGEN CORP (RGEN).
This page ranks the largest institutional RGEN shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
466
Total Reported Value
$8.81B
Largest Holder
Blackrock, Inc.
Largest Position
$734.72M
Insider Transactions (90d)
6
Latest Filing Quarter
Q2 2026
New Institutional Positions
57
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 5,384,938 | $734,720,970 | $959,542,102 | +$224,821,132 | +30.60% | |
| Fmr Llc | 0.02% | 3,326,690 | $453,893,517 | $592,782,891 | +$138,889,374 | +30.60% | |
| United Capital Financial Advisors, Llc | 2.10% | 2,790,650 | $380,756,286 | $497,265,924 | +$116,509,638 | +30.60% | |
| Vanguard Capital Management Llc | 0.01% | 2,411,171 | $328,980,171 | $429,646,560 | +$100,666,389 | +30.60% | |
| Vanguard Portfolio Management Llc | 0.01% | 2,312,825 | $315,561,843 | $412,122,287 | +$96,560,444 | +30.60% | |
| Maverick Capital Ltd | 2.44% | 1,984,554 | $270,772,548 | $353,627,677 | +$82,855,129 | +30.60% | |
| State Street Corp | 0.01% | 1,800,530 | $245,681,945 | $320,836,441 | +$75,154,496 | +30.59% | |
| Price T Rowe Associates Inc | 0.02% | 1,752,274 | $239,081,000 | $312,237,704 | +$73,156,704 | +30.60% | |
| Massachusetts Financial Services Co | 0.07% | 1,617,021 | $220,610,156 | $288,136,972 | +$67,526,816 | +30.61% | |
| Wasatch Advisors Lp | 1.42% | 1,590,251 | $216,973,846 | $283,366,826 | +$66,392,980 | +30.60% | |
| Ameriprise Financial Inc | 0.04% | 1,576,132 | $215,047,874 | $280,850,961 | +$65,803,087 | +30.60% | |
| Bank Of New York Mellon Corp | 0.03% | 1,522,859 | $207,778,967 | $271,358,245 | +$63,579,278 | +30.60% | |
| T. Rowe Price Investment Management, Inc. | 0.13% | 1,411,619 | $192,602,000 | $251,536,390 | +$58,934,390 | +30.60% | |
| Invesco Ltd. | 0.01% | 1,387,242 | $189,275,298 | $247,192,652 | +$57,917,354 | +30.60% | |
| Holocene Advisors, Lp | 0.40% | 1,292,191 | $176,306,540 | $230,255,514 | +$53,948,974 | +30.60% | |
| Rtw Investments, Lp | 1.45% | 1,240,637 | $169,272,512 | $221,069,107 | +$51,796,595 | +30.60% | |
| Geode Capital Management, Llc | 0.01% | 1,062,476 | $144,997,943 | $189,322,598 | +$44,324,655 | +30.57% | |
| Congress Asset Management Co | 0.85% | 1,012,226 | $138,108,115 | $180,368,551 | +$42,260,436 | +30.60% | |
| Conestoga Capital Advisors, Llc | 2.91% | 980,983 | $133,845,321 | $174,801,361 | +$40,956,040 | +30.60% | |
| Goldman Sachs Group Inc | 0.01% | 965,411 | $131,720,677 | $172,026,586 | +$40,305,909 | +30.60% | |
| Dimensional Fund Advisors Lp | 0.02% | 949,863 | $129,603,332 | $169,256,088 | +$39,652,756 | +30.60% | |
| Stephens Investment Management Group Llc | 1.37% | 937,084 | $127,855,741 | $166,978,998 | +$39,123,257 | +30.60% | |
| Ubs Group Ag | 0.02% | 795,009 | $108,471,029 | $141,662,654 | +$33,191,625 | +30.60% | |
| William Blair Investment Management, Llc | 0.32% | 788,571 | $107,592,627 | $140,515,466 | +$32,922,839 | +30.60% | |
| Bamco Inc | 0.15% | 748,466 | $102,120,701 | $133,369,157 | +$31,248,456 | +30.60% | |
| Fred Alger Management, Llc | 0.33% | 733,739 | $100,111,349 | $130,744,952 | +$30,633,603 | +30.60% | |
| Schroder Investment Management Group | 0.07% | 696,173 | $94,985,844 | $124,051,067 | +$29,065,223 | +30.60% | |
| Alliancebernstein L.P. | 0.03% | 795,282 | $93,700,125 | $141,711,300 | +$48,011,175 | +51.24% | |
| Geneva Capital Management Llc | 2.05% | 656,093 | $89,517,317 | $116,909,212 | +$27,391,895 | +30.60% | |
| First Trust Advisors Lp | 0.05% | 634,219 | $86,532,840 | $113,011,484 | +$26,478,644 | +30.60% | |
| Norges Bank | 0.01% | 575,226 | $78,483,835 | $102,499,521 | +$24,015,686 | +30.60% | |
| Voya Investment Management Llc | 0.06% | 549,203 | $74,933,257 | $97,862,483 | +$22,929,226 | +30.60% | |
| Morgan Stanley | 0.00% | 543,242 | $74,120,160 | $96,800,292 | +$22,680,132 | +30.60% | |
| Charles Schwab Investment Management Inc | 0.01% | 481,744 | $65,729,151 | $85,841,963 | +$20,112,812 | +30.60% | |
| Timessquare Capital Management, Llc | 0.90% | 446,964 | $60,983,768 | $79,644,515 | +$18,660,747 | +30.60% | |
| Northern Trust Corp | 0.01% | 444,146 | $60,599,279 | $79,142,376 | +$18,543,097 | +30.60% | |
| Thrivent Financial For Lutherans | 0.10% | 436,865 | $59,606,000 | $77,844,974 | +$18,238,974 | +30.60% | |
| Jpmorgan Chase & Co | 0.00% | 427,770 | $58,946,031 | $76,224,336 | +$17,278,305 | +29.31% | |
| Bank Of America Corp | 0.00% | 426,291 | $58,163,143 | $75,960,793 | +$17,797,650 | +30.60% | |
| Vestal Point Capital, Lp | 1.28% | 400,000 | $54,576,000 | $71,276,000 | +$16,700,000 | +30.60% | |
| Impax Asset Management Group Plc | 0.35% | 396,513 | $54,100,234 | $70,654,651 | +$16,554,417 | +30.60% | |
| Citadel Advisors Llc | 0.03% | 376,309 | $51,343,600 | $67,054,501 | +$15,710,901 | +30.60% | |
| Sei Investments Co | 0.04% | 373,307 | $50,934,778 | $66,519,574 | +$15,584,796 | +30.60% | |
| American Capital Management Inc | 2.21% | 361,055 | $49,262,344 | $64,336,390 | +$15,074,046 | +30.60% | |
| Bnp Paribas Asset Management Holding S.A. | 0.05% | 356,942 | $48,701,166 | $63,603,495 | +$14,902,329 | +30.60% | |
| Df Dent & Co Inc | 0.92% | 356,854 | $48,689,109 | $63,587,814 | +$14,898,705 | +30.60% | |
| Balyasny Asset Management L.P. | 0.09% | 355,507 | $48,505,375 | $63,347,792 | +$14,842,417 | +30.60% | |
| Vanguard Fiduciary Trust Co | 0.01% | 336,295 | $45,884,090 | $59,924,406 | +$14,040,316 | +30.60% | |
| Granahan Investment Management, Llc | 1.62% | 332,271 | $45,335,055 | $59,207,369 | +$13,872,314 | +30.60% | |
| Primecap Management Co/Ca/ | 0.03% | 323,268 | $44,106,686 | $57,603,125 | +$13,496,439 | +30.60% |
Frequently asked questions about RGEN
Who owns the most RGEN stock?
The largest holders of RGEN are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for REPLIGEN CORP (RGEN).
Is RGEN widely held by superinvestors?
Many widely followed stocks like RGEN appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly RGEN is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.