L3VLUP
ProSign in

RGEN in the 13F filings

Repligen Corp · CUSIP 759916109

Sector · Pharmaceuticals and biotechnologyTheme · Biological productsTheme · Healthcare: biopharma and medtech· L3VLUP-defined
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
30 Jun 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 3 Aug 2026
Managers listing it
27
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q1 2026 and Q2 2026; 8 listed it in both
Shares listed
14,110,877
combined, among listed positions
Reported value
$1.9bn
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 19 buyers (opened or added shares) and 10 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -1,674,615.

Managers listing RGEN in Q2 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q1 2026, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

27 of 27 holders

ActionFiling
Fidelity (FMR LLC)3,326,690$454munder 0.1%Added+439,90413 Aug 2026 (the filing on sec.gov)
Maverick Capital Ltd1,984,554$271m2.39%Added+465,74914 Aug 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc1,752,274$239munder 0.1%Trimmed-3,125,86714 Aug 2026 (the filing on sec.gov)
MFS Investment Management1,617,021$221m0.07%Added+219,5063 Aug 2026 (the filing on sec.gov)
Invesco Ltd1,387,242$189munder 0.1%Added+108,98714 Aug 2026 (the filing on sec.gov)
Holocene Advisors LP1,292,191$176m0.40%Added+583,30214 Aug 2026 (the filing on sec.gov)
AllianceBernstein LP795,282$94munder 0.1%Trimmed-36,51014 Aug 2026 (the filing on sec.gov)
Janus Henderson Group Ltd406,001$55munder 0.1%Added+381,68514 Aug 2026 (the filing on sec.gov)
Citadel Advisors LLC376,309$51munder 0.1%Trimmed-722,8722 Sep 2026 (the filing on sec.gov)
Balyasny Asset Management LLC355,507$49m0.06%Added+230,03814 Aug 2026 (the filing on sec.gov)
Marshall Wace LLP282,107$38munder 0.1%Newnew13 Aug 2026 (the filing on sec.gov)
Point72 Asset Management LP166,157$23munder 0.1%Trimmed-403,31714 Aug 2026 (the filing on sec.gov)
D. E. Shaw & Co.83,328$11munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Hudson Bay Capital Management LP60,000$8.2munder 0.1%Trimmed-32,50014 Aug 2026 (the filing on sec.gov)
Verition Fund Management LLC37,996$5.2munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Moore Capital Management LP37,549$5.1m0.08%Newnew14 Aug 2026 (the filing on sec.gov)
Jane Street Group LLC36,759$5.0munder 0.1%Added+1,78114 Aug 2026 (the filing on sec.gov)
Tudor Investment Corp25,678$3.5munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Susquehanna International Group LLP21,721$3.0munder 0.1%Trimmed-17,45514 Aug 2026 (the filing on sec.gov)
Man Group PLC20,341$2.8munder 0.1%Added+9,16114 Aug 2026 (the filing on sec.gov)
Arrowstreet Capital LP17,822$2.4munder 0.1%Newnew13 Aug 2026 (the filing on sec.gov)
Two Sigma Investments LP9,901$1.4munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
AQR Capital Management LLC8,936$1.2munder 0.1%Added+5614 Aug 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP4,288$585kunder 0.1%Trimmed-35,94014 Aug 2026 (the filing on sec.gov)
Neuberger Berman Group LLC2,035$278kunder 0.1%Trimmed-25,33127 Oct 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q1 2026 to Q2 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (9)

Exited (2)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
10 in Q3 2024 to 10 in Q2 2026

Tracked managers listing it, at least.

051015201420182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
RGEN by quarter
QuarterHoldersReported valueBuyersSellers
Q3 20131$14mn.a.n.a.
Q4 20131$18mn.a.n.a.
Q1 20141$17mn.a.n.a.
Q2 20142$33mn.a.n.a.
Q3 20142$28mn.a.n.a.
Q4 20142$24mn.a.n.a.
Q1 20153$47mn.a.n.a.
Q2 20152$41mn.a.n.a.
Q3 20152$27mn.a.n.a.
Q4 20152$23mn.a.n.a.
Q2 20162$32mn.a.n.a.
Q3 20163$45mn.a.n.a.
Q4 20163$13mn.a.n.a.
Q1 20172$2.8mn.a.n.a.
Q2 20173$7.7mn.a.n.a.
Q3 20171$1.5mn.a.n.a.
Q4 20171$2.3mn.a.n.a.
Q1 20182$2.0mn.a.n.a.
Q2 20182$3.3mn.a.n.a.
Q3 20183$149mn.a.n.a.
Q4 20185$121mn.a.n.a.
Q1 20195$262mn.a.n.a.
Q2 20195$498mn.a.n.a.
Q3 20194$419mn.a.n.a.
Q4 20194$443mn.a.n.a.
Q1 202012$838mn.a.n.a.
Q2 202013$1.1bnn.a.n.a.
Q3 202011$1.1bnn.a.n.a.
Q4 202011$1.6bnn.a.n.a.
Q1 202113$1.4bnn.a.n.a.
Q2 202113$1.5bnn.a.n.a.
Q3 202112$2.0bnn.a.n.a.
Q4 202114$1.9bnn.a.n.a.
Q1 202210$1.5bnn.a.n.a.
Q2 20228$1.8bnn.a.n.a.
Q3 20229$1.7bnn.a.n.a.
Q4 20229$1.7bnn.a.n.a.
Q1 20238$1.6bnn.a.n.a.
Q2 20236$1.1bnn.a.n.a.
Q3 20237$1.6bnn.a.n.a.
Q4 20238$1.6bn44
Q1 20248$1.5bn54
Q2 202410$959m74
Q3 202410$1.3bn74
Q4 202411$1.7bn92
Q1 202511$1.7bn75
Q2 202510$1.5bn55
Q3 202513$1.5bn95
Q4 202512$2.0bn1123
Q1 20269$1.2bn1116
Q2 202610$1.2bn1910

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

RGEN and GILD →RGEN and AMGN →RGEN and ARGX →Choose a stock to compare with RGEN →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own RGEN, latest filings →Back to the 13F Explorer →