Position in RGEN
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$51,343,599
-$78,161,906 QoQ
Shares Held
376,309
-65.8% QoQ
Ownership
0.667%
of shares outstanding
% of Portfolio
0.03%
of 13F equity value
Holder Rank
#44
of 480 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in RGEN Over Time
Shares Held
Position Value (USD)
Derivatives in RGEN
reported options exposure · as of Jun 30, 2026CallValue
$5,430,312
CallShares
39,800
PutValue
$1,500,840
PutShares
11,000
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, 2026CITADEL ADVISORS LLC holds $1,314,082,089 across 43 Medical Instruments & Supplies names. RGEN ranks #8 (3.9% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | COO |
Cooper Companies, Inc.
|
3,872,397 | $277,689,588 | |
| 2 | ISRG |
Intuitive Surgical Inc
|
470,076 | $186,939,823 | |
| 3 | TFX |
Teleflex Inc
|
1,140,950 | $144,626,822 | |
| 4 | WST |
West Pharmaceutical Services Inc
|
352,769 | $126,644,071 | |
| 5 | RMD |
Resmed Inc
|
508,284 | $99,054,385 | |
| 6 | ICUI |
Icu Medical Inc/De
|
536,225 | $78,610,585 | |
| 7 | MMSI |
Merit Medical Systems Inc
|
909,863 | $63,089,900 | |
| 8 | RGEN |
Repligen Corp
This page
|
376,309 | $51,343,599 |
All Filings in RGEN
Export CSV
50 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $1,500,840 | 11,000 | Put | Defined | 2026-08-14 | |
| 2026-06-30 | $51,343,599 | 376,309 | Shares | Defined | 2026-08-14 | |
| 2026-06-30 | $5,430,312 | 39,800 | Call | Defined | 2026-08-14 | |
| 2026-03-31 | $2,674,514 | 22,700 | Put | Defined | 2026-05-15 | |
| 2026-03-31 | $129,505,505 | 1,099,181 | Shares | Defined | 2026-05-15 | |
| 2026-03-31 | $4,665,672 | 39,600 | Call | Defined | 2026-05-15 | |
| 2025-12-31 | $4,670,010 | 28,500 | Call | Defined | 2026-02-17 | |
| 2025-12-31 | $228,462,132 | 1,394,252 | Shares | Defined | 2026-02-17 | |
| 2025-12-31 | $1,868,004 | 11,400 | Put | Defined | 2026-02-17 | |
| 2025-09-30 | $4,691,817 | 35,100 | Call | Defined | 2025-11-14 | |
| 2025-09-30 | $5,293,332 | 39,600 | Put | Defined | 2025-11-14 | |
| 2025-09-30 | $225,196,521 | 1,684,720 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $5,771,232 | 46,400 | Put | Defined | 2025-08-14 | |
| 2025-06-30 | $132,222,904 | 1,063,056 | Shares | Defined | 2025-08-14 | |
| 2025-06-30 | $3,320,946 | 26,700 | Call | Defined | 2025-08-14 | |
| 2025-03-31 | $3,740,856 | 29,400 | Put | Defined | 2025-05-15 | |
| 2025-03-31 | $169,195,480 | 1,329,735 | Shares | Defined | 2025-05-15 | |
| 2025-03-31 | $3,181,000 | 25,000 | Call | Defined | 2025-05-15 | |
| 2024-12-31 | $8,060,640 | 56,000 | Call | Defined | 2025-02-14 | |
| 2024-12-31 | $3,742,440 | 26,000 | Put | Defined | 2025-02-14 | |
| 2024-12-31 | $169,777,517 | 1,179,502 | Shares | Defined | 2025-02-14 | |
| 2024-09-30 | $8,482,740 | 57,000 | Call | Defined | 2024-11-14 | |
| 2024-09-30 | $76,770,433 | 515,861 | Shares | Defined | 2024-11-14 | |
| 2024-09-30 | $2,768,052 | 18,600 | Put | Defined | 2024-11-14 | |
| 2024-06-30 | $431,503 | 3,423 | Shares | Defined | 2024-08-14 | |
| 2024-06-30 | $13,085,028 | 103,800 | Call | Defined | 2024-08-14 | |
| 2024-06-30 | $1,575,750 | 12,500 | Put | Defined | 2024-08-14 | |
| 2024-03-31 | $36,747,216 | 199,800 | Call | Defined | 2024-05-15 | |
| 2024-03-31 | $19,356,660 | 105,245 | Shares | Defined | 2024-05-15 | |
| 2024-03-31 | $8,662,632 | 47,100 | Put | Defined | 2024-05-15 | |
| 2023-12-31 | $50,429,944 | 280,478 | Shares | Defined | 2024-02-14 | |
| 2023-12-31 | $10,176,680 | 56,600 | Call | Defined | 2024-02-14 | |
| 2023-12-31 | $3,991,560 | 22,200 | Put | Defined | 2024-02-14 | |
| 2023-09-30 | $2,242,041 | 14,100 | Put | Defined | 2023-11-14 | |
| 2023-09-30 | $3,005,289 | 18,900 | Call | Defined | 2023-11-14 | |
| 2023-09-30 | $63,213,948 | 397,547 | Shares | Defined | 2023-11-14 | |
| 2023-06-30 | $12,086,059 | 85,438 | Shares | Defined | 2023-08-14 | |
| 2023-06-30 | $5,913,028 | 41,800 | Put | Defined | 2023-08-14 | |
| 2023-06-30 | $2,815,054 | 19,900 | Call | Defined | 2023-08-14 | |
| 2023-03-31 | $5,943,108 | 35,300 | Call | Defined | 2023-05-15 | |
| 2023-03-31 | $3,636,576 | 21,600 | Put | Defined | 2023-05-15 | |
| 2023-03-31 | $907,460 | 5,390 | Shares | Defined | 2023-05-15 | |
| 2022-12-31 | $6,010,505 | 35,500 | Put | Defined | 2023-02-14 | |
| 2022-12-31 | $11,140,598 | 65,800 | Call | Defined | 2023-02-14 | |
| 2022-12-31 | $43,343 | 256 | Shares | Defined | 2023-02-14 | |
| 2022-09-30 | $5,031,949 | 26,893 | Shares | Defined | 2022-11-14 | |
| 2022-09-30 | $5,950,098 | 31,800 | Put | Defined | 2022-11-14 | |
| 2022-09-30 | $9,804,564 | 52,400 | Call | Defined | 2022-11-14 | |
| 2022-06-30 | $4,238,640 | 26,100 | Put | Defined | 2022-08-15 | |
| 2022-06-30 | $13,415,701 | 82,609 | Shares | Defined | 2022-08-15 | |
| No filing history on record for this holder in this stock. | ||||||