CSPI
CSP IncMarquee-fund ownership over time
This quarter's activity
New positions opened
Positions exited
None.
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 | $14 | $9.44 | -35% |
| Citadel Advisors | Q2 2026(8Q snapshot) | 1Q | $9.30 | $9.44 | +2% |
“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 |
|---|---|---|---|---|
| Millennium Management | Q3 2024 | Q4 2025 | → $11 | -15% |
Insider activity
Form 4 — officers, directors, 10%+ ownersFiled within two business days of each transaction by anyone with material insider status at CSP INC /MA/. 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 10, 2026 — the most recent Form 4 on file — not from today.
- Form 40001214659-26-007312Jun 10, 2026
- Form 40001282498-26-000016May 18, 2026
- Form 40001663272-26-000005May 14, 2026
- Form 40001214659-26-006063May 13, 2026
- Form 40001687188-26-000003May 13, 2026
- Form 40001663272-26-000004Apr 15, 2026
- Form 40001282498-26-000012Apr 1, 2026
- Form 40001282498-26-000011Apr 1, 2026
- Form 40001282498-26-000010Apr 1, 2026
- Form 40001282498-26-000009Apr 1, 2026
- Form 40001282498-26-000008Apr 1, 2026
- Form 40001214659-26-003249Mar 13, 2026
- Form 40001214659-26-002537Feb 26, 2026
- Form 40001214659-26-002177Feb 19, 2026
- Form 40001214659-25-013798Sep 16, 2025
Fundamentals
XBRL · CSP IncAnnual figures sourced directly from CSP 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 CSP INC /MA/ — earnings, material events, ownership disclosures, proxy statements. Form 4 insider activity is shown in the panel above.
- 8-KMaterial eventJun 9, 2026
- 10-QQuarterly reportMay 7, 2026
- 8-KMaterial eventMay 7, 2026
- 8-KMaterial eventMar 16, 2026
- 8-KMaterial eventFeb 13, 2026
- 10-QQuarterly reportFeb 12, 2026
- 8-KMaterial eventFeb 12, 2026
- DEF 14AProxy statementDec 30, 2025
- 10-KAnnual reportDec 16, 2025
- 8-KMaterial eventDec 16, 2025
- 10-QQuarterly reportAug 14, 2025
- 8-KMaterial eventAug 14, 2025
- 10-QQuarterly reportMay 15, 2025
- 8-KMaterial eventMay 14, 2025
- 8-KMaterial eventMar 31, 2025
Trade history
Every open→close lifecycle across tracked funds| Fund | Open date | Close date | Open price | Close price / current | Return |
|---|---|---|---|---|---|
| Citadel Advisors | Q2 2026 | open | $9.30 | $9.44 | +2% |
| Millennium Management | Q3 2024 | Q4 2025 | $13 | $11 | -15% |
| Renaissance Technologies | Q3 2024 | open | $14 | $9.44 | -35% |
- 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.