REPLIGEN CORP (RGEN) — Institutional Holders, Q2 2026

510 institutional investment managers reported a RGEN position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $9.6B. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.

← RGEN stock profile

RGEN in Q2 2026: what funds did

Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.

New positions

Added to

186

Trimmed

147

Sold out

Biggest buyers

WILLIAM BLAIR INVESTMENT MANAGEMENTNew · +788,571 sh+$107.6M
Holocene AdvisorsAdded · +583,302 sh+$79.6M
MAVERICK CAPITAL LTDAdded · +465,749 sh+$63.5M
WASATCH ADVISORSAdded · +346,720 sh+$47.3M
FRED ALGER MANAGEMENTAdded · +298,965 sh+$40.8M

Biggest sellers

PRICE T ROWE ASSOCIATESTrimmed · -3,125,867 sh-$426.5M
CITADEL ADVISORSTrimmed · -722,872 sh-$98.6M
Vestal Point CapitalTrimmed · -525,000 sh-$71.6M
Champlain Investment PartnersTrimmed · -374,900 sh-$51.2M
Artemis Investment Management LLPTrimmed · -300,061 sh-$40.9M

RGEN 13F holders ranked 1–100 of 510

Institutional investors reporting a position in REPLIGEN CORP on SEC Form 13F-HR for Q2 2026, ranked by reported value.
#	Institution	Shares	Value	% of portfolio	QoQShares vs Q1 2026
1	BlackRock#1 · 17,630,938 sh	17,630,938	$747.2M	0.01%	+12.0%
2	FMR#2 · 11,432,690 sh	11,432,690	$462.2M	0.02%	+3.7%
3	UNITED CAPITAL FINANCIAL ADVISORS#3 · 2,790,650 sh	2,790,650	$380.8M	2.10%	+0.6%
4	VANGUARD CAPITAL MANAGEMENT#4 · 2,411,171 sh	2,411,171	$329.0M	<0.01%	+0.6%
5	VANGUARD PORTFOLIO MANAGEMENT#5 · 2,312,825 sh	2,312,825	$315.6M	0.01%	+0.3%
6	MAVERICK CAPITAL LTD#6 · 1,984,554 sh	1,984,554	$270.8M	2.39%	+30.7%
7	STATE STREET#7 · 16,750,530 sh	16,750,530	$261.0M	<0.01%	+17.7%
8	PRICE T ROWE ASSOCIATES#8 · 1,752,274 sh	1,752,274	$239.1M	0.02%	-64.1%
9	MASSACHUSETTS FINANCIAL SERVICES#9 · 1,617,021 sh	1,617,021	$220.6M	0.07%	+15.7%
10	WASATCH ADVISORS#10 · 1,590,251 sh	1,590,251	$217.0M	—	+27.9%
11	AMERIPRISE FINANCIAL#11 · 1,576,132 sh	1,576,132	$215.0M	0.04%	-88.3%
12	Bank of New York Mellon#12 · 1,772,859 sh	1,772,859	$208.0M	0.03%	-0.5%
13	T. Rowe Price Investment Management#13 · 1,411,619 sh	1,411,619	$192.6M	0.13%	+3.3%
14	Invesco Ltd.#14 · 1,387,242 sh	1,387,242	$189.3M	0.01%	+8.5%
15	Holocene Advisors#15 · 1,292,191 sh	1,292,191	$176.3M	0.40%	+82.3%
16	FRANKLIN RESOURCES#16 · 54,076,216 sh	54,076,216	$176.1M	0.04%	-0.6%
17	RTW INVESTMENTS#17 · 1,240,637 sh	1,240,637	$169.3M	1.45%	+2.9%
18	GEODE CAPITAL MANAGEMENT#18 · 1,062,476 sh	1,062,476	$145.0M	<0.01%	-0.2%
19	CONGRESS ASSET MANAGEMENT#19 · 1,012,226 sh	1,012,226	$138.1M	—	+26.9%
20	GOLDMAN SACHS GROUP#20 · 3,668,411 sh	3,668,411	$134.5M	0.01%	+463.2%
21	Conestoga Capital Advisors#21 · 980,983 sh	980,983	$133.8M	2.91%	-10.6%
22	DIMENSIONAL FUND ADVISORS#22 · 949,863 sh	949,863	$129.6M	0.02%	+11.1%
23	Stephens Investment Management Group#23 · 937,084 sh	937,084	$127.9M	1.37%	+24.0%
24	UBS Group AG#24 · 795,009 sh	795,009	$108.5M	0.01%	+18.6%
25	WILLIAM BLAIR INVESTMENT MANAGEMENT#25 · 788,571 sh	788,571	$107.6M	0.32%	New
26	BAMCO#26 · 748,466 sh	748,466	$102.1M	0.15%	+36.5%
27	FRED ALGER MANAGEMENT#27 · 733,739 sh	733,739	$100.1M	0.33%	+68.8%
28	DeepCurrents Investment Group#28 · 94,439,000 sh	94,439,000	$96.8M	2.93%	0.0%
29	SCHRODER INVESTMENT MANAGEMENT GROUP#29 · 696,173 sh	696,173	$95.0M	0.07%	+33.9%
30	ALLIANCEBERNSTEIN L.P.#30 · 795,282 sh	795,282	$93.7M	0.03%	-4.4%
31	GENEVA CAPITAL MANAGEMENT#31 · 656,093 sh	656,093	$89.5M	2.05%	-5.4%
32	FIRST ADVISORS#32 · 634,219 sh	634,219	$86.5M	0.05%	+0.7%
33	NORGES BANK#33 · 575,226 sh	575,226	$78.5M	<0.01%	—
34	Aequim Alternative Investments#34 · 75,000,000 sh	75,000,000	$77.1M	1.20%	-7.8%
35	VOYA INVESTMENT MANAGEMENT#35 · 549,203 sh	549,203	$74.9M	0.06%	-11.8%
36	MORGAN STANLEY#36 · 815,242 sh	815,242	$74.4M	<0.01%	-14.7%
37	JPMORGAN CHASE#37 · 12,544,770 sh	12,544,770	$71.4M	<0.01%	+97.2%
38	CHARLES SCHWAB INVESTMENT MANAGEMENT#38 · 481,744 sh	481,744	$65.7M	<0.01%	+6.3%
39	TimesSquare Capital Management#39 · 446,964 sh	446,964	$61.0M	0.90%	-2.0%
40	NORTHERN#40 · 444,146 sh	444,146	$60.6M	<0.01%	-0.1%
41	THRIVENT FINANCIAL FOR LUTHERANS#41 · 436,865 sh	436,865	$59.6M	0.10%	+2.7%
42	BANK OF AMERICA#42 · 426,291 sh	426,291	$58.2M	<0.01%	-69.7%
43	Jupiter Topco#43 · 406,001 sh	406,001	$55.4M	0.02%	—
44	Vestal Point Capital#44 · 400,000 sh	400,000	$54.6M	1.28%	-56.8%
45	Impax Asset Management Group plc#45 · 396,513 sh	396,513	$54.1M	0.35%	-9.6%
46	WOLVERINE ASSET MANAGEMENT#46 · 51,224,000 sh	51,224,000	$52.5M	0.46%	New
47	CITADEL ADVISORS#47 · 376,309 sh	376,309	$51.3M	<0.01%	-65.8%
48	BNP Paribas Asset Management Holding S.A.#48 · 2,856,942 sh	2,856,942	$51.3M	0.05%	-0.7%
49	SEI INVESTMENTS#49 · 373,307 sh	373,307	$50.9M	0.04%	+37.2%
50	AMERICAN CAPITAL MANAGEMENT#50 · 361,055 sh	361,055	$49.3M	2.21%	+0.9%
51	DF DENT#51 · 356,854 sh	356,854	$48.7M	0.92%	-2.3%
52	BALYASNY ASSET MANAGEMENT L.P.#52 · 355,507 sh	355,507	$48.5M	0.06%	+183.3%
53	VANGUARD FIDUCIARY#53 · 336,295 sh	336,295	$45.9M	0.01%	+1.7%
54	Granahan Investment Management#54 · 332,271 sh	332,271	$45.3M	1.62%	+282.1%
55	PRIMECAP MANAGEMENT#55 · 323,268 sh	323,268	$44.1M	0.03%	+37.5%
56	Champlain Investment Partners#56 · 318,955 sh	318,955	$43.5M	1.12%	-54.0%
57	BRAIDWELL#57 · 16,177,100 sh	16,177,100	$40.6M	1.50%	-84.0%
58	SILVERCREST ASSET MANAGEMENT GROUP#58 · 290,559 sh	290,559	$39.6M	0.26%	+241.4%
59	MARSHALL WACE, LLP#59 · 282,107 sh	282,107	$38.5M	0.03%	New
60	12 West Capital Management#60 · 280,165 sh	280,165	$38.2M	7.15%	+46.5%
61	BNP PARIBAS FINANCIAL MARKETS#61 · 12,176,838 sh	12,176,838	$36.4M	0.01%	0.0%
62	Daiwa Securities Group#62 · 265,972 sh	265,972	$36.3M	0.07%	+10.9%
63	TENOR CAPITAL MANAGEMENT , L.P.#63 · 34,000,000 sh	34,000,000	$34.9M	0.49%	+320.2%
64	PERCEPTIVE ADVISORS#64 · 248,212 sh	248,212	$33.9M	0.51%	-11.5%
65	LMR Partners LLP#65 · 228,600 sh	228,600	$31.2M	0.12%	-9.7%
66	AMERICAN CENTURY COMPANIES#66 · 213,004 sh	213,004	$29.1M	0.01%	-9.5%
67	NZS Capital#67 · 205,257 sh	205,257	$28.0M	0.73%	+1.0%
68	ZAZOVE ASSOCIATES#68 · 26,305,000 sh	26,305,000	$27.0M	2.17%	0.0%
69	BRADLEY FOSTER & SARGENT#69 · 195,435 sh	195,435	$26.7M	0.38%	New
70	Wellesley Asset Management#70 · 25,587,000 sh	25,587,000	$24.5M	2.24%	+4.5%
71	ADVENT CAPITAL MANAGEMENT#71 · 23,815,000 sh	23,815,000	$24.5M	0.55%	+14.6%
72	Blue Whale Capital LLP#72 · 178,377 sh	178,377	$24.3M	0.77%	-55.9%
73	ROYCE & ASSOCIATES#73 · 174,794 sh	174,794	$23.8M	0.19%	+50.8%
74	RAYMOND JAMES FINANCIAL#74 · 188,826 sh	188,826	$23.6M	<0.01%	+1.6%
75	RIVERBRIDGE PARTNERS#75 · 172,507 sh	172,507	$23.5M	0.66%	-33.3%
76	SEGALL BRYANT & HAMILL#76 · 169,811 sh	169,811	$23.2M	0.27%	New
77	CAPSTONE INVESTMENT ADVISORS#77 · 22,500,000 sh	22,500,000	$23.1M	0.02%	New
78	NOMURA ASSET MANAGEMENT INTERNATIONAL#78 · 168,256 sh	168,256	$23.0M	0.03%	-7.2%
79	Point72 Asset Management, L.P.#79 · 166,157 sh	166,157	$22.7M	0.03%	-97.0%
80	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#80 · 161,713 sh	161,713	$22.1M	<0.01%	-1.2%
81	FIFTH THIRD BANCORP#81 · 164,424 sh	164,424	$21.5M	0.03%	-2.2%
82	Allspring Global Investments#82 · 153,107 sh	153,107	$21.3M	0.03%	-45.4%
83	BARCLAYS PLC#83 · 155,745 sh	155,745	$21.2M	<0.01%	-61.9%
84	PALISADE CAPITAL MANAGEMENT#84 · 5,809,768 sh	5,809,768	$20.8M	0.91%	+2314.5%
85	LOOMIS SAYLES & L P#85 · 148,676 sh	148,676	$20.3M	0.03%	-2.6%
86	Baird Financial Group#86 · 144,571 sh	144,571	$19.7M	0.03%	-15.8%
87	Gotham Asset Management#87 · 142,613 sh	142,613	$19.5M	0.05%	+396.1%
88	BROWN CAPITAL MANAGEMENT#88 · 140,899 sh	140,899	$19.2M	3.84%	-17.1%
89	ENVESTNET ASSET MANAGEMENT#89 · 140,415 sh	140,415	$19.2M	<0.01%	+9.7%
90	PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO#90 · 134,571 sh	134,571	$18.4M	0.06%	0.0%
91	RHUMBLINE ADVISERS#91 · 134,370 sh	134,370	$18.3M	0.01%	-1.4%
92	RMB Capital Management#92 · 125,661 sh	125,661	$17.1M	0.26%	+5.9%
93	Artemis Investment Management LLP#93 · 121,727 sh	121,727	$16.6M	—	-71.1%
94	PRINCIPAL FINANCIAL GROUP#94 · 120,383 sh	120,383	$16.4M	<0.01%	-24.6%
95	Nuveen#95 · 117,519 sh	117,519	$16.0M	<0.01%	+11.9%
96	NEW YORK STATE COMMON RETIREMENT FUND#96 · 117,103 sh	117,103	$16.0M	0.02%	-33.6%
97	READYSTATE ASSET MANAGEMENT#97 · 10,041,500 sh	10,041,500	$15.9M	0.01%	+151.0%
98	OSAIC#98 · 115,136 sh	115,136	$15.7M	0.02%	+33.6%
99	LORD, ABBETT#99 · 2,307,965 sh	2,307,965	$15.6M	0.04%	+2511.8%
100	ROYAL BANK OF CANADA#100 · 285,759 sh	285,759	$15.4M	<0.01%	-11.8%

Funds that sold out of RGEN in Q2 2026 (56)

Held RGEN at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.

Institutions that held RGEN in Q1 2026 and reported no position in Q2 2026.
Institution	Shares sold	Value in Q1 2026
Artisan Partners Limited Partnership190,100 sh	190,100	$22.4M
Ranger Investment Management, L.P.161,135 sh	161,135	$19.0M
OAKTREE CAPITAL MANAGEMENT8,997,000 sh	8,997,000	$8.8M
Cornerstone Advisors56,690 sh	56,690	$6.7M
Opti Capital Management6,581,000 sh	6,581,000	$6.4M
Roubaix Capital54,555 sh	54,555	$6.4M
Campbell & Investment Adviser46,674 sh	46,674	$5.5M
Generate Investment Management Ltd41,521 sh	41,521	$4.9M
Sone Capital Management39,340 sh	39,340	$4.6M
Caption Management27,500 sh	27,500	$3.2M
INTECH INVESTMENT MANAGEMENT16,673 sh	16,673	$2.0M
Mirae Asset Global Investments , Ltd.14,565 sh	14,565	$1.7M
TWINBEECH CAPITAL13,500 sh	13,500	$1.6M
WESTPAC BANKING11,410 sh	11,410	$1.3M
IMC-Chicago9,012 sh	9,012	$1.1M
Blueshift Asset Management7,351 sh	7,351	$866.1K
LRT Capital Management6,917 sh	6,917	$815.0K
CenterBook Partners6,380 sh	6,380	$751.7K
FOX RUN MANAGEMENT, L.L.C.5,988 sh	5,988	$667.6K
Marex Group plc5,572 sh	5,572	$656.5K
Quantitative Investment Management4,508 sh	4,508	$531.0K
MANGROVE PARTNERS IM4,390 sh	4,390	$517.2K
BANQUE PICTET & CIE SA4,087 sh	4,087	$481.5K
Machina Capital S.A.S.2,543 sh	2,543	$299.6K
Dynamic Technology Lab Private Ltd2,540 sh	2,540	$299.3K
Knollwood Investment Advisory2,500 sh	2,500	$294.6K
State of Wyoming2,101 sh	2,101	$247.5K
LANDSCAPE CAPITAL MANAGEMENT, L.L.C.2,042 sh	2,042	$240.6K
JAG CAPITAL MANAGEMENT1,936 sh	1,936	$228.1K
Vestmark Advisory Solutions1,919 sh	1,919	$226.1K
HighTower Advisors1,759 sh	1,759	$207.3K
Neo Ivy Capital Management1,394 sh	1,394	$164.2K
ABN AMRO INVESTMENT SOLUTIONS150,000 sh	150,000	$147.0K
Sava Infond d.o.o.1,200 sh	1,200	$141.4K
Advisory Services Network1,145 sh	1,145	$134.9K
Timothy G. Youngquist 2020 Irrevocable537 sh	537	$63.3K
RESOURCES MANAGEMENT /CT250 sh	250	$29.0K
Rachor Investment Advisory Services200 sh	200	$23.6K
NOMURA ASSET MANAGEMENT LTD130 sh	130	$15.3K
Western Wealth Management100 sh	100	$11.8K
CHILTON CAPITAL MANAGEMENT53 sh	53	$6.2K
SMA Capital48 sh	48	$5.7K
MAI Capital Management47 sh	47	$5.5K
Meramec Financial Planners33 sh	33	$4.4K
JNBA Financial Advisors31 sh	31	$3.7K
RAELIPSKIE PARTNERSHIP25 sh	25	$2.9K
Fourth Dimension Wealth20 sh	20	$2.4K
TWIN PEAKS WEALTH ADVISORS19 sh	19	$2.2K
Root Financial Partners17 sh	17	$2.0K
Raleigh Capital Management13 sh	13	$1.5K
MCF Advisors11 sh	11	$1.3K
Salomon & Ludwin10 sh	10	$1.2K
Phillip James Consulting4 sh	4	$1.0K
Torren Management3 sh	3	$353.00
Quaker Wealth Management2 sh	2	$236.00
Manchester Capital Management1 sh	1	$118.00

Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.