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Equibles

D. E. Shaw & Co., Inc.

Position in RGEN — Repligen Corp

CIK 1009207 New York, NY
Back to RGEN Full portfolio

Position in RGEN

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$11,369,272
+$11,369,272 QoQ
Shares Held
83,328
Ownership
0.148%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#97
of 482 holders
Holding Since
Mar 2020
25 quarters on record
Voting authority Sole 99% Shared 0% None 1%

Common Shares in RGEN Over Time

Shares Held

Position Value (USD)

Derivatives in RGEN

reported options exposure · as of Mar 31, 2026
CallValue
$3,098,666
CallShares
26,300
PutValue
$0
PutShares
0

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Medical Instruments & Supplies

Healthcare · as of Jun 30, 2026

D. E. Shaw & Co., Inc. holds $666,768,416 across 28 Medical Instruments & Supplies names. RGEN ranks #11 (1.7% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 ISRG
Intuitive Surgical Inc
 340,267 $135,317,380
2 ALC
Alcon Inc
 1,857,763 $124,655,897
3 AVTR
Avantor, Inc.
 9,571,523 $94,758,077
4 BLCO
Bausch & Lomb Corp
 3,323,021 $55,029,227
5 ATR
Aptargroup, Inc.
 392,399 $49,128,354
6 SOLV
Solventum Corp
 526,392 $40,611,142
7 ALGN
Align Technology Inc
 211,142 $35,611,209
8 AZTA
Azenta, Inc.
 1,341,164 $34,226,504

All Filings in RGEN

Export CSV
50 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $11,369,272 83,328
2026-03-31 $3,098,666 26,300
2025-12-31 $4,309,518 26,300
2025-09-30 $1,844,646 13,800
2025-09-30 $33,408,143 249,930
2025-09-30 $2,820,437 21,100
2025-06-30 $700,508 5,632
2025-06-30 $2,487,600 20,000
2025-03-31 $332,350 2,612
2025-03-31 $2,544,800 20,000
2024-12-31 $6,477,300 45,000
2024-12-31 $728,192 5,059
2024-09-30 $3,720,500 25,000
2024-06-30 $2,521,200 20,000
2024-06-30 $802,876 6,369
2024-03-31 $23,065,591 125,411
2023-12-31 $14,830,803 82,485
2023-12-31 $2,697,000 15,000
2023-09-30 $2,385,150 15,000
2023-09-30 $2,318,365 14,580
2023-09-30 $1,669,605 10,500
2023-06-30 $1,414,600 10,000
2023-06-30 $1,615,614 11,421
2023-06-30 $2,121,900 15,000
2023-03-31 $1,818,288 10,800
2023-03-31 $757,620 4,500
2022-12-31 $910,718 5,379
2022-12-31 $2,099,444 12,400
2022-12-31 $2,031,720 12,000
2022-09-30 $3,817,044 20,400
2022-09-30 $1,046,319 5,592
2022-09-30 $5,332,635 28,500
2022-06-30 $5,407,920 33,300
2022-06-30 $1,510,320 9,300
2022-06-30 $1,591,844 9,802
2022-03-31 $934,619 4,969
2022-03-31 $2,652,069 14,100
2022-03-31 $4,871,531 25,900
2021-12-31 $6,250,224 23,600
2021-12-31 $963,752 3,639
2021-12-31 $3,734,244 14,100
2021-09-30 $3,719,301 12,870
2021-09-30 $317,889 1,100
2021-09-30 $3,785,769 13,100
2021-03-31 $1,084,030 5,576
2021-03-31 $1,944,100 10,000
2020-12-31 $7,966,825 41,574
2020-09-30 $17,495,440 118,581
2020-06-30 $3,211,387 25,980
2020-03-31 $4,923,346 50,998