| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 9.3% | $724,772,059 | 5,198,107 | BlackRock, Inc. | 31 Mar 2025 | |||
| PRICE T ROWE ASSOCIATES INC /MD/ | 8.2% | +35% | $753,733,060 | +$191,767,488 | 4,599,860 | +34% | T. Rowe Price Associates, Inc. | 31 Dec 2025 |
| FMR LLC | 5.1% | $473,742,228 | 2,891,140 | FMR LLC | 31 Dec 2025 | |||
| EDDLEMAN ROY T | 4.8% | $377,254,217 | 2,705,689 | Roy T. Eddleman Living Trust | 31 Dec 2024 | |||
| Roy T. Eddleman Living Trust | 4.8% | $443,354,200 | 2,705,689 | Roy T. Eddleman Living Trust | 31 Dec 2025 |
As of 31 Dec 2025, 366 institutional investors reported holding 36,870,780 shares of REPLIGEN CORP - COMMON STOCK (RGEN). This represents 66% of the company’s total 56,095,854 outstanding shares.
The largest institutional shareholders of REPLIGEN CORP - COMMON STOCK (RGEN) together control 73% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 12% | 6,619,271 | +7.8% | 0.02% | $1,084,633,737 |
| VANGUARD GROUP INC | 8.9% | 4,993,945 | -1% | 0.01% | $818,307,828 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 8.2% | 4,599,061 | +31% | 0.08% | $753,603,000 |
| FMR LLC | 5.1% | 2,867,846 | +6.6% | 0.02% | $469,925,204 |
| UNITED CAPITAL FINANCIAL ADVISORS, LLC | 4.9% | 2,770,862 | +0.54% | 2.7% | $454,033,447 |
| STATE STREET CORP | 3.1% | 1,719,093 | -4.6% | 0.01% | $281,690,579 |
| CITADEL ADVISORS LLC | 2.5% | 1,394,252 | -17% | 0.16% | $228,462,133 |
| Bank of New York Mellon Corp | 2.4% | 1,344,706 | +2.2% | 0.04% | $220,343,507 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 2.2% | 1,215,527 | 0.06% | $199,176,255 | |
| FRANKLIN RESOURCES INC | 2% | 1,101,447 | +160% | 0.04% | $180,483,177 |
| RTW INVESTMENTS, LP | 1.9% | 1,064,000 | 1.7% | $174,347,040 | |
| Conestoga Capital Advisors, LLC | 1.9% | 1,057,975 | +11% | 2.9% | $173,359,783 |
| GEODE CAPITAL MANAGEMENT, LLC | 1.8% | 1,029,817 | -0.25% | 0.01% | $168,778,619 |
| Champlain Investment Partners, LLC | 1.8% | 1,003,951 | -25% | 1.7% | $164,507,411 |
| ALLIANCEBERNSTEIN L.P. | 1.8% | 994,869 | -9.9% | 0.05% | $163,019,234 |
| Holocene Advisors, LP | 1.7% | 961,040 | -30% | 0.33% | $157,476,014 |
| FRED ALGER MANAGEMENT, LLC | 1.6% | 911,527 | +154% | 0.59% | $149,362,814 |
| DIMENSIONAL FUND ADVISORS LP | 1.4% | 804,410 | +0.61% | 0.03% | $131,820,884 |
| CONGRESS ASSET MANAGEMENT CO | 1.3% | 746,306 | +241% | 0.86% | $122,289,701 |
| Stephens Investment Management Group LLC | 1.2% | 657,111 | +9.8% | 1.4% | $107,674,208 |
| MILLENNIUM MANAGEMENT LLC | 1.2% | 650,546 | -20% | 0.08% | $106,598,468 |
| MORGAN STANLEY | 1% | 570,977 | +18% | 0.01% | $93,560,643 |
| GENEVA CAPITAL MANAGEMENT LLC | 1% | 562,975 | -5.7% | 1.7% | $92,249,110 |
| BAMCO INC /NY/ | 0.97% | 544,779 | +43% | 0.24% | $89,267,487 |
| VOYA INVESTMENT MANAGEMENT LLC | 0.93% | 521,158 | +72% | 0.08% | $85,396,950 |
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2025 Q4 | 36,870,780 | $6,042,394,951 | +$598,670,128 | $163.86 | 366 |
| 2025 Q3 | 59,801,075 | $7,995,723,297 | +$244,091,517 | $133.67 | 447 |
| 2025 Q2 | 58,017,175 | $7,215,764,205 | +$69,143,795 | $124.38 | 442 |
| 2025 Q1 | 57,398,139 | $7,304,074,415 | +$139,148,090 | $127.24 | 438 |
| 2024 Q4 | 56,237,230 | $8,094,090,864 | +$105,844,498 | $143.94 | 427 |
| 2024 Q3 | 55,459,700 | $8,245,941,080 | +$30,279,223 | $148.82 | 439 |
| 2024 Q2 | 56,044,624 | $7,061,943,055 | -$124,495,148 | $126.06 | 443 |
| 2024 Q1 | 56,261,991 | $10,338,765,280 | -$351,039,614 | $183.92 | 480 |
| 2023 Q4 | 58,123,283 | $10,446,984,164 | +$202,954,749 | $179.80 | 463 |
| 2023 Q3 | 57,114,183 | $9,078,983,361 | +$388,815,346 | $159.01 | 435 |
| 2023 Q2 | 54,662,151 | $7,739,525,912 | +$95,572,264 | $141.46 | 441 |
| 2023 Q1 | 53,769,139 | $9,050,236,781 | +$70,900,818 | $168.36 | 442 |
| 2022 Q4 | 53,510,392 | $9,060,023,350 | +$399,717,699 | $169.31 | 436 |
| 2022 Q3 | 51,044,970 | $9,557,589,432 | +$146,390,498 | $187.11 | 424 |
| 2022 Q2 | 50,252,292 | $8,165,826,817 | +$277,439,901 | $162.40 | 391 |
| 2022 Q1 | 48,677,414 | $9,149,179,277 | +$200,963,724 | $188.09 | 431 |
| 2021 Q4 | 47,109,897 | $12,469,909,891 | -$237,031,385 | $264.84 | 488 |
| 2021 Q3 | 47,237,181 | $13,643,742,113 | +$286,277,453 | $288.99 | 472 |
| 2021 Q2 | 46,326,341 | $9,247,532,543 | +$156,619,410 | $199.62 | 421 |
| 2021 Q1 | 45,659,995 | $8,873,275,638 | +$76,902,679 | $194.41 | 453 |
| 2020 Q4 | 45,796,926 | $8,774,116,572 | +$266,909,562 | $191.63 | 444 |
| 2020 Q3 | 44,707,932 | $6,601,225,733 | -$40,211,297 | $147.54 | 384 |
| 2020 Q2 | 45,107,923 | $5,577,989,614 | -$187,234,914 | $123.61 | 363 |
| 2020 Q1 | 46,463,810 | $4,483,615,651 | +$298,271,944 | $96.54 | 301 |
| 2019 Q4 | 43,538,059 | $4,026,527,029 | -$117,270,573 | $92.50 | 296 |
| 2019 Q3 | 44,787,098 | $3,433,491,573 | -$8,489,335 | $76.69 | 295 |
| 2019 Q2 | 44,747,389 | $3,843,255,917 | +$502,114,798 | $85.95 | 264 |
| 2019 Q1 | 40,224,387 | $2,376,319,121 | +$32,032,553 | $59.08 | 241 |
| 2018 Q4 | 39,767,674 | $2,097,073,822 | -$116,566,198 | $52.74 | 237 |
| 2018 Q3 | 41,788,098 | $2,317,550,403 | +$69,379,349 | $55.46 | 196 |
| 2018 Q2 | 40,579,436 | $1,908,570,055 | +$106,872,252 | $47.04 | 188 |
| 2018 Q1 | 38,649,161 | $1,398,390,226 | +$29,165,817 | $36.18 | 181 |
| 2017 Q4 | 37,859,448 | $1,373,622,569 | +$48,489,524 | $36.28 | 178 |
| 2017 Q3 | 36,449,660 | $1,396,445,142 | +$28,789,176 | $38.32 | 187 |
| 2017 Q2 | 35,593,025 | $1,474,924,268 | +$151,642,443 | $41.44 | 197 |
| 2017 Q1 | 32,529,133 | $1,144,981,808 | +$158,118,910 | $35.20 | 179 |
| 2016 Q4 | 32,263,497 | $994,535,738 | +$13,422,590 | $30.82 | 180 |
| 2016 Q3 | 31,904,315 | $962,738,212 | +$47,789,217 | $30.19 | 177 |
| 2016 Q2 | 30,428,990 | $832,590,372 | +$19,372,010 | $27.36 | 181 |
| 2016 Q1 | 29,619,988 | $794,428,927 | +$36,143,815 | $26.82 | 180 |
| 2015 Q4 | 28,540,885 | $807,342,773 | -$43,257,537 | $28.29 | 173 |
| 2015 Q3 | 30,095,607 | $838,161,582 | -$17,473,045 | $27.85 | 183 |
| 2015 Q2 | 30,306,137 | $1,250,670,824 | +$37,385,722 | $41.27 | 173 |
| 2015 Q1 | 29,621,574 | $898,254,268 | +$24,883,359 | $30.36 | 166 |
| 2014 Q4 | 28,861,708 | $571,461,773 | +$24,816,515 | $19.80 | 158 |
| 2014 Q3 | 28,133,338 | $560,134,714 | -$3,584,613 | $19.91 | 162 |
| 2014 Q2 | 28,122,228 | $640,523,743 | +$56,963,037 | $22.79 | 162 |
| 2014 Q1 | 26,217,884 | $337,427,505 | +$13,060,004 | $12.86 | 132 |