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 $7.05B 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 $706.10M in its March 31, 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 $845.08M, representing an estimated gain of +19.68% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 42% 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
445
Total Reported Value
$7.05B
Largest Holder
Blackrock, Inc.
Largest Position
$706.10M
Insider Transactions (90d)
2
Latest Filing Quarter
Q2 2026
New Institutional Positions
62
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% | 5,993,054 | $706,101,618 | $845,080,545 | +$138,978,927 | +19.68% | |
| Fmr Llc | 0.02% | 2,886,786 | $340,121,066 | $407,065,694 | +$66,944,628 | +19.68% | |
| United Capital Financial Advisors, Llc | 2.02% | 2,773,980 | $326,830,324 | $391,158,920 | +$64,328,596 | +19.68% | |
| Vanguard Capital Management Llc | 0.01% | 2,396,511 | $282,356,926 | $337,932,016 | +$55,575,090 | +19.68% | |
| Vanguard Portfolio Management Llc | 0.01% | 2,305,094 | $271,586,175 | $325,041,305 | +$53,455,130 | +19.68% | |
| Massachusetts Financial Services Co | 0.07% | 1,617,021 | $220,610,156 | $228,016,131 | +$7,405,975 | +3.36% | |
| Wasatch Advisors Lp | 1.42% | 1,590,251 | $216,973,846 | $224,241,294 | +$7,267,448 | +3.35% | |
| State Street Corp | 0.01% | 1,777,285 | $209,399,719 | $250,614,958 | +$41,215,239 | +19.68% | |
| Bank Of New York Mellon Corp | 0.03% | 1,531,402 | $180,429,810 | $215,942,996 | +$35,513,186 | +19.68% | |
| Maverick Capital Ltd | 2.08% | 1,518,805 | $178,945,605 | $214,166,693 | +$35,221,088 | +19.68% | |
| Invesco Ltd. | 0.02% | 1,278,255 | $150,604,003 | $180,246,738 | +$29,642,735 | +19.68% | |
| Rtw Investments, Lp | 1.41% | 1,206,000 | $142,090,920 | $170,058,060 | +$27,967,140 | +19.68% | |
| Franklin Resources Inc | 0.03% | 1,193,139 | $140,575,621 | $168,244,530 | +$27,668,909 | +19.68% | |
| Congress Asset Management Co | 0.85% | 1,012,226 | $138,108,115 | $142,733,988 | +$4,625,873 | +3.35% | |
| Alliancebernstein L.P. | 0.04% | 831,792 | $136,297,437 | $117,290,990 | -$19,006,447 | -13.94% | |
| Conestoga Capital Advisors, Llc | 2.91% | 980,983 | $133,845,321 | $138,328,413 | +$4,483,092 | +3.35% | |
| Citadel Advisors Llc | 0.09% | 1,099,181 | $129,505,505 | $154,995,513 | +$25,490,008 | +19.68% | |
| Stephens Investment Management Group Llc | 1.37% | 937,084 | $127,855,741 | $132,138,215 | +$4,282,474 | +3.35% | |
| Geode Capital Management, Llc | 0.01% | 1,064,457 | $125,442,489 | $150,099,082 | +$24,656,593 | +19.66% | |
| Ameriprise Financial Inc | 0.03% | 925,214 | $109,008,799 | $130,464,426 | +$21,455,627 | +19.68% | |
| Vestal Point Capital, Lp | 3.05% | 925,000 | $108,983,500 | $130,434,250 | +$21,450,750 | +19.68% | |
| Dimensional Fund Advisors Lp | 0.02% | 854,741 | $100,681,052 | $120,527,028 | +$19,845,976 | +19.71% | |
| Holocene Advisors, Lp | 0.20% | 708,889 | $83,521,302 | $99,960,438 | +$16,439,136 | +19.68% | |
| Champlain Investment Partners, Llc | 1.04% | 693,855 | $81,749,996 | $97,840,494 | +$16,090,498 | +19.68% | |
| Geneva Capital Management Llc | 1.74% | 693,738 | $81,736,233 | $97,823,995 | +$16,087,762 | +19.68% | |
| Morgan Stanley | 0.00% | 683,789 | $80,564,183 | $96,421,087 | +$15,856,904 | +19.68% | |
| Ubs Group Ag | 0.01% | 670,329 | $78,978,163 | $94,523,092 | +$15,544,929 | +19.68% | |
| Goldman Sachs Group Inc | 0.01% | 651,347 | $76,741,704 | $91,846,440 | +$15,104,736 | +19.68% | |
| First Trust Advisors Lp | 0.05% | 630,070 | $74,234,816 | $88,846,171 | +$14,611,355 | +19.68% | |
| Voya Investment Management Llc | 0.08% | 622,920 | $73,392,434 | $87,837,949 | +$14,445,515 | +19.68% | |
| Point72 Asset Management, L.P. | 0.12% | 569,474 | $67,095,427 | $80,301,529 | +$13,206,102 | +19.68% | |
| Bamco Inc | 0.20% | 548,346 | $64,606,126 | $77,322,269 | +$12,716,143 | +19.68% | |
| Schroder Investment Management Group | 0.05% | 520,114 | $61,279,831 | $73,341,275 | +$12,061,444 | +19.68% | |
| Timessquare Capital Management, Llc | 0.91% | 456,083 | $53,735,699 | $64,312,264 | +$10,576,565 | +19.68% | |
| Charles Schwab Investment Management Inc | 0.01% | 453,044 | $53,377,644 | $63,883,734 | +$10,506,090 | +19.68% | |
| Northern Trust Corp | 0.01% | 444,746 | $52,399,974 | $62,713,633 | +$10,313,659 | +19.68% | |
| Impax Asset Management Group Plc | 0.36% | 438,468 | $51,660,300 | $61,828,373 | +$10,168,073 | +19.68% | |
| Fred Alger Management, Llc | 0.23% | 434,774 | $51,225,073 | $61,307,482 | +$10,082,409 | +19.68% | |
| Blue Whale Capital Llp | 2.26% | 404,200 | $47,622,844 | $56,996,242 | +$9,373,398 | +19.68% | |
| Bank Of America Corp | 0.00% | 378,205 | $44,560,113 | $53,330,687 | +$8,770,574 | +19.68% | |
| Bnp Paribas Asset Management Holding S.A. | 0.05% | 377,009 | $44,419,200 | $53,162,039 | +$8,742,839 | +19.68% | |
| Df Dent & Co Inc | 0.82% | 365,115 | $43,017,879 | $51,484,866 | +$8,466,987 | +19.68% | |
| American Capital Management Inc | 2.26% | 357,720 | $42,146,570 | $50,442,097 | +$8,295,527 | +19.68% | |
| Vanguard Fiduciary Trust Co | 0.01% | 330,767 | $38,970,968 | $46,641,455 | +$7,670,487 | +19.68% | |
| Daiwa Securities Group Inc. | 0.09% | 265,972 | $36,289,220 | $37,504,712 | +$1,215,492 | +3.35% | |
| Allspring Global Investments Holdings, Llc | 0.06% | 280,523 | $33,191,482 | $39,556,548 | +$6,365,066 | +19.18% | |
| Perceptive Advisors Llc | 0.65% | 280,541 | $33,053,341 | $39,559,086 | +$6,505,745 | +19.68% | |
| Sei Investments Co | 0.03% | 272,103 | $32,060,817 | $38,369,244 | +$6,308,427 | +19.68% | |
| Lmr Partners Llp | 0.28% | 253,060 | $29,815,529 | $35,683,991 | +$5,868,462 | +19.68% | |
| Palisade Capital Management, Lp | 0.94% | 240,619 | $28,349,731 | $33,929,685 | +$5,579,954 | +19.68% |
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.