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Equibles

CITADEL ADVISORS LLC

Position in RGEN — Repligen Corp

CIK 1423053 MIAMI, FL
Back to RGEN Full portfolio

Position in RGEN

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$129,505,505
-$98,956,627 QoQ
Shares Held
1,099,181
-21.2% QoQ
Ownership
1.95%
of shares outstanding
% of Portfolio
0.10%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in RGEN Over Time

Shares Held

Position Value (USD)

Derivatives in RGEN

reported options exposure · as of Mar 31, 2026
CallValue
$4,665,672
CallShares
39,600
PutValue
$2,674,514
PutShares
22,700

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 Mar 31, 2026

CITADEL ADVISORS LLC holds $1,983,617,750 across 42 Medical Instruments & Supplies names. RGEN ranks #4 (6.5% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 ISRG
Intuitive Surgical Inc
 1,356,011 $625,107,510
2 TFX
Teleflex Inc
 1,171,096 $140,074,791
3 BDX
Becton Dickinson & Co
 829,501 $130,422,441
4 RGEN
Repligen Corp
This page 		1,099,181 $129,505,505
5 ALGN
Align Technology Inc
 730,025 $125,148,185
6 NVST
Envista Holdings Corp
 4,584,572 $116,310,591
7 HOLX
HOLOGIC INC
 1,090,660 $82,442,989
8 WST
West Pharmaceutical Services Inc
 323,587 $81,103,845

All Filings in RGEN

Export CSV
50 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $2,674,514 22,700
2026-03-31 $129,505,505 1,099,181
2026-03-31 $4,665,672 39,600
2025-12-31 $4,670,010 28,500
2025-12-31 $228,462,132 1,394,252
2025-12-31 $1,868,004 11,400
2025-09-30 $4,691,817 35,100
2025-09-30 $5,293,332 39,600
2025-09-30 $225,196,521 1,684,720
2025-06-30 $5,771,232 46,400
2025-06-30 $132,222,904 1,063,056
2025-06-30 $3,320,946 26,700
2025-03-31 $3,740,856 29,400
2025-03-31 $169,195,480 1,329,735
2025-03-31 $3,181,000 25,000
2024-12-31 $8,060,640 56,000
2024-12-31 $3,742,440 26,000
2024-12-31 $169,777,517 1,179,502
2024-09-30 $8,482,740 57,000
2024-09-30 $76,770,433 515,861
2024-09-30 $2,768,052 18,600
2024-06-30 $431,503 3,423
2024-06-30 $13,085,028 103,800
2024-06-30 $1,575,750 12,500
2024-03-31 $36,747,216 199,800
2024-03-31 $19,356,660 105,245
2024-03-31 $8,662,632 47,100
2023-12-31 $50,429,944 280,478
2023-12-31 $10,176,680 56,600
2023-12-31 $3,991,560 22,200
2023-09-30 $2,242,041 14,100
2023-09-30 $3,005,289 18,900
2023-09-30 $63,213,948 397,547
2023-06-30 $12,086,059 85,438
2023-06-30 $5,913,028 41,800
2023-06-30 $2,815,054 19,900
2023-03-31 $5,943,108 35,300
2023-03-31 $3,636,576 21,600
2023-03-31 $907,460 5,390
2022-12-31 $6,010,505 35,500
2022-12-31 $11,140,598 65,800
2022-12-31 $43,343 256
2022-09-30 $5,031,949 26,893
2022-09-30 $5,950,098 31,800
2022-09-30 $9,804,564 52,400
2022-06-30 $4,238,640 26,100
2022-06-30 $13,415,701 82,609
2022-06-30 $6,772,080 41,700
2022-03-31 $5,263,510 27,984
2022-03-31 $6,583,150 35,000

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