MASS
908 DEVICES 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 | $4.35 | $6.64 | +53% |
| Citadel Advisors re-entered | Q3 2024(8Q snapshot) | 7Q | $4.15 | $6.64 | +60% |
| AQR Capital Management re-entered | Q3 2024(8Q snapshot) | 7Q | $4.15 | $6.64 | +60% |
| Millennium Management re-entered | Q3 2024(8Q snapshot) | 7Q | $4.15 | $6.64 | +60% |
| Two Sigma Investments | Q1 2025(8Q snapshot) | 5Q | $2.78 | $6.64 | +139% |
“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 |
|---|---|---|---|---|
| Point72 Asset Management | Q1 2026 | Q2 2026 | → $6.90 | +2% |
| D.E. Shaw | Q3 2024 | Q1 2026 | → $6.76 | +63% |
Insider activity
Form 4 — officers, directors, 10%+ ownersFiled within two business days of each transaction by anyone with material insider status at 908 Devices 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 Jun 5, 2026 — the most recent Form 4 on file — not from today.
- Form 40001836988-26-000013Jun 5, 2026
- Form 40001535264-26-000034Jun 4, 2026
- Form 40001836988-26-000011Jun 4, 2026
- Form 40001535264-26-000033May 29, 2026
- Form 40001836988-26-000009May 29, 2026
- Form 40001431531-26-000005May 29, 2026
- Form 40001535264-26-000030May 13, 2026
- Form 40001836876-26-000009May 11, 2026
- Form 40001535264-26-000029May 8, 2026
- Form 40001836988-26-000007May 7, 2026
- Form 40001836876-26-000007May 4, 2026
- Form 40001836876-26-000005Apr 29, 2026
- Form 40002127645-26-000004Apr 22, 2026
- Form 40002115341-26-000012Apr 14, 2026
- Form 40002115341-26-000010Apr 10, 2026
Fundamentals
XBRL · 908 DEVICES INC.Annual figures sourced directly from 908 DEVICES 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 908 Devices Inc. — earnings, material events, ownership disclosures, proxy statements. Form 4 insider activity is shown in the panel above.
- 10-QQuarterly reportMay 6, 2026
- 8-KFORM 8-KMay 6, 2026
- DEF 14AFORM DEF 14AApr 29, 2026
- S-3Registration (shelf)Mar 9, 2026
- 10-KAnnual reportMar 9, 2026
- 8-KMaterial eventMar 3, 2026
- 8-KMaterial eventJan 20, 2026
- 10-QQuarterly reportNov 10, 2025
- 8-KFORM 8-KNov 10, 2025
- 10-QQuarterly reportAug 5, 2025
- 8-KFORM 8-KAug 5, 2025
- 8-KFORM 8-KAug 4, 2025
- 8-KFORM 8-KJun 16, 2025
- 8-KFORM 8-KJun 13, 2025
- 10-QQuarterly reportMay 13, 2025
Trade history
Every open→close lifecycle across tracked funds| Fund | Open date | Close date | Open price | Close price / current | Return |
|---|---|---|---|---|---|
| Citadel Advisors | Q1 2026 | open | $6.76 | $6.64 | -2% |
| Point72 Asset Management | Q1 2026 | Q2 2026 | $6.76 | $6.90 | +2% |
| Millennium Management | Q3 2025 | open | $7.07 | $6.64 | -6% |
| AQR Capital Management | Q2 2025 | open | $4.52 | $6.64 | +47% |
| Two Sigma Investments | Q1 2025 | open | $2.78 | $6.64 | +139% |
| Citadel Advisors | Q3 2024 | Q2 2025 | $4.15 | $4.52 | +9% |
| D.E. Shaw | Q3 2024 | Q1 2026 | $4.15 | $6.76 | +63% |
| AQR Capital Management | Q3 2024 | Q1 2025 | $4.15 | $2.78 | -33% |
| Millennium Management | Q3 2024 | Q2 2025 | $4.15 | $4.52 | +9% |
| Renaissance Technologies | Q3 2024 | open | $4.35 | $6.64 | +53% |
- 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.