RGEN
REPLIGEN CORPMarquee-fund ownership over time
This quarter's activity
Current holders
Sorted by tenure (longest first)| Fund | First disclosed | Held | Entry price | Latest close | Return on entry |
|---|---|---|---|---|---|
| Maverick Capital re-entered | Q2 2021 | 21Q | $166 | $104 | -37% |
| Millennium Management | Q3 2024(8Q snapshot) | 7Q | $160 | $104 | -35% |
| Point72 Asset Management re-entered | Q3 2024(8Q snapshot) | 7Q | $160 | $104 | -35% |
| AQR Capital Management re-entered | Q2 2025(8Q snapshot) | 4Q | $123 | $104 | -15% |
“Return on entry” is the price-only move from the fund's first disclosure to today — it ignores any adds, trims, or dividends. A fund that built its position over multiple quarters has a true cost basis somewhere between entry price and latest close; this figure is the upper bound.
Past holders
Funds that exited at some point| Fund | Last entry | Exited | Entry → Exit | Return |
|---|---|---|---|---|
| Bridgewater Associates 3× in & out | Q4 2025 | Q2 2026 | → $103 | -32% |
| Two Sigma Investments | Q3 2024 | Q2 2026 | → $103 | -36% |
| Citadel Advisors 3× in & out | Q4 2025 | Q1 2026 | — | +0% |
| D.E. Shaw 2× in & out | Q1 2025 | Q1 2026 | → $135 | -8% |
| Renaissance Technologies 2× in & out | Q3 2025 | Q1 2026 | → $133 | +4% |
Insider activity
Form 4 — officers, directors, 10%+ ownersFiled within two business days of each transaction by anyone with material insider status at REPLIGEN CORP. Pair with the holders table above as a sanity check: heavy insider buying alongside marquee-fund accumulation is the strongest accumulation signal; heavy insider selling alongside fund exits is the strongest distribution signal.
30d / 90d windows measured from May 18, 2026 — the most recent Form 4 on file — not from today.
- Form 40001193125-26-228896May 18, 2026
- Form 40001193125-26-228897May 18, 2026
- Form 40001193125-26-228893May 18, 2026
- Form 40001193125-26-228888May 18, 2026
- Form 40001193125-26-228886May 18, 2026
- Form 40001193125-26-228891May 18, 2026
- Form 40001193125-26-228884May 18, 2026
- Form 40001193125-26-228883May 18, 2026
- Form 40001193125-26-214293May 8, 2026
- Form 40001193125-26-214265May 8, 2026
- Form 40001193125-26-169682Apr 22, 2026
- Form 40001193125-26-119047Mar 23, 2026
- Form 40001193125-26-119036Mar 23, 2026
- Form 40001193125-26-119034Mar 23, 2026
- Form 40001193125-26-119031Mar 23, 2026
Fundamentals
XBRL · REPLIGEN CORPAnnual figures sourced directly from REPLIGEN CORP's 10-K / 10-Q filings via SEC EDGAR XBRL. Latest fiscal year and the year-over-year change, with up to ten years of history.
Recent SEC filings
10-K · 10-Q · 8-K · 13D/G · proxyThe most recent material filings for REPLIGEN CORP — earnings, material events, ownership disclosures, proxy statements. Form 4 insider activity is shown in the panel above.
- 8-KMaterial eventMay 15, 2026
- 10-QQuarterly reportMay 6, 2026
- 8-KMaterial eventMay 5, 2026
- DEF 14AProxy statementApr 2, 2026
- 10-KAnnual reportFeb 26, 2026
- 8-KMaterial eventFeb 24, 2026
- 8-KMaterial eventJan 6, 2026
- 10-QQuarterly reportNov 4, 2025
- 8-KMaterial eventOct 28, 2025
- 8-KMaterial eventSep 2, 2025
- 10-QQuarterly reportAug 7, 2025
- 8-KMaterial eventJul 29, 2025
- 8-KMaterial eventMay 15, 2025
- 10-QQuarterly reportApr 29, 2025
- 8-KMaterial eventApr 29, 2025
Trade history
Every open→close lifecycle across tracked funds| Fund | Open date | Close date | Open price | Close price / current | Return |
|---|---|---|---|---|---|
| Maverick Capital | Q2 2026 | open | $103 | $121 | +17% |
| Point72 Asset Management | Q2 2026 | open | $0.00 | — | +0% |
| Citadel Advisors | Q4 2025 | Q1 2026 | $0.00 | — | +0% |
| AQR Capital Management | Q4 2025 | open | $152 | $104 | -32% |
| Bridgewater Associates | Q4 2025 | Q2 2026 | $151 | $103 | -32% |
| Renaissance Technologies | Q3 2025 | Q1 2026 | $127 | $133 | +4% |
| Citadel Advisors | Q2 2025 | Q3 2025 | $0.00 | — | +0% |
| AQR Capital Management | Q2 2025 | Q3 2025 | $123 | $127 | +3% |
| D.E. Shaw | Q1 2025 | Q1 2026 | $147 | $135 | -8% |
| Citadel Advisors | Q3 2024 | open | $160 | $104 | -35% |
| Two Sigma Investments | Q3 2024 | Q2 2026 | $160 | $103 | -36% |
| D.E. Shaw | Q3 2024 | Q4 2024 | $160 | $142 | -11% |
| Millennium Management | Q3 2024 | open | $160 | $104 | -35% |
| Point72 Asset Management | Q3 2024 | open | $160 | $104 | -35% |
| Renaissance Technologies | Q3 2024 | Q4 2024 | $165 | $150 | -9% |
| Bridgewater Associates | Q2 2022 | Q2 2023 | $150 | $152 | +1% |
| Bridgewater Associates | Q4 2021 | Q1 2022 | $259 | $186 | -28% |
| Maverick Capital | Q2 2021 | Q3 2021 | $166 | $256 | +54% |
- Covers only the 27 marquee funds tracked here, not the full institutional universe. A “0 holders” reading does not mean unowned.
- Heavy funds (Renaissance Technologies, Citadel Advisors, Soros Fund Management, Two Sigma Investments, D.E. Shaw, AQR Capital Management, Millennium Management, Point72 Asset Management) use 8-quarter snapshots, so their pre-2024 history is missing.
- “Current” reflects each fund's most recent 13F — filings lag the actual trade by up to 45 days; positions shown may have changed since.
- Cost = price at the entry filing date. Re-entered positions show the most recent open lot.
- Options, ADRs, and unmapped CUSIPs are excluded from the follower-backtest pipeline that produces these snapshots, so certain holding types won't appear here.