EBS
EMERGENT BIOSOLUTIONS INC.Marquee-fund ownership over time
This quarter's activity
New positions opened
None.
Positions exited
Current holders
Sorted by tenure (longest first)| Fund | First disclosed | Held | Entry price | Latest close | Return on entry |
|---|---|---|---|---|---|
| Renaissance Technologies | Q3 2024(8Q snapshot) | 7Q | $7.09 | $8.13 | +15% |
| Two Sigma Investments | Q3 2024(8Q snapshot) | 7Q | $7.57 | $8.13 | +7% |
| D.E. Shaw | Q3 2024(8Q snapshot) | 7Q | $7.57 | $8.13 | +7% |
| AQR Capital Management re-entered | Q3 2024(8Q snapshot) | 7Q | $7.57 | $8.13 | +7% |
| Millennium Management | Q3 2024(8Q snapshot) | 7Q | $7.57 | $8.13 | +7% |
“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 |
|---|---|---|---|---|
| Citadel Advisors | Q3 2024 | Q2 2026 | → $7.94 | +5% |
| Maverick Capital 2× in & out | Q3 2021 | Q1 2022 | → $45 | -25% |
Insider activity
Form 4 — officers, directors, 10%+ ownersFiled within two business days of each transaction by anyone with material insider status at Emergent BioSolutions Inc.. 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 4, 2026 — the most recent Form 4 on file — not from today.
- Form 40001536908-26-000004May 4, 2026
- Form 40001583098-26-000004May 4, 2026
- Form 40001314596-26-000002May 4, 2026
- Form 40001493324-26-000002May 4, 2026
- Form 40001190344-26-000012May 4, 2026
- Form 40001380177-26-000004May 4, 2026
- Form 40001685720-26-000003May 4, 2026
- Form 40001493692-26-000003May 4, 2026
- Form 40001380184-26-000005May 4, 2026
- Form 40001961994-26-000017May 1, 2026
- Form 40002044279-26-000007May 1, 2026
- Form 40001919170-26-000012May 1, 2026
- Form 40001196632-26-000013May 1, 2026
- Form 40002043716-26-000007May 1, 2026
- Form 40001989644-26-000007May 1, 2026
Fundamentals
XBRL · EMERGENT BIOSOLUTIONS INC.Annual figures sourced directly from EMERGENT BIOSOLUTIONS INC.'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 Emergent BioSolutions Inc. — earnings, material events, ownership disclosures, proxy statements. Form 4 insider activity is shown in the panel above.
- 10-QQuarterly reportMay 1, 2026
- 8-KMaterial eventApr 30, 2026
- 8-KMaterial eventApr 30, 2026
- 8-KMaterial eventApr 17, 2026
- DEF 14AProxy statementMar 20, 2026
- 8-KMaterial eventMar 3, 2026
- 10-KAnnual reportFeb 27, 2026
- 8-KMaterial eventFeb 26, 2026
- 8-KMaterial eventJan 14, 2026
- 8-KMaterial eventJan 12, 2026
- 8-KMaterial eventDec 12, 2025
- 8-KMaterial eventNov 12, 2025
- 10-QQuarterly reportOct 30, 2025
- 8-KMaterial eventOct 29, 2025
- 8-KMaterial eventSep 11, 2025
Trade history
Every open→close lifecycle across tracked funds| Fund | Open date | Close date | Open price | Close price / current | Return |
|---|---|---|---|---|---|
| AQR Capital Management | Q4 2025 | open | $10 | $8.13 | -20% |
| Citadel Advisors | Q3 2024 | Q2 2026 | $7.57 | $7.94 | +5% |
| Two Sigma Investments | Q3 2024 | open | $7.57 | $8.13 | +7% |
| D.E. Shaw | Q3 2024 | open | $7.57 | $8.13 | +7% |
| AQR Capital Management | Q3 2024 | Q4 2024 | $7.57 | $9.27 | +22% |
| Millennium Management | Q3 2024 | open | $7.57 | $8.13 | +7% |
| Renaissance Technologies | Q3 2024 | open | $7.09 | $8.13 | +15% |
| Maverick Capital | Q3 2021 | Q1 2022 | $60 | $45 | -25% |
| Maverick Capital | Q1 2021 | Q2 2021 | $123 | $60 | -51% |
- 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.