Watch for any active fund follow-through in subsequent quarters, as passive alone rarely drives sustained outperformance.
Executive Summary
A cluster of five major passive index funds (Vanguard, BlackRock, State Street, Fidelity, Morgan Stanley) collectively added $15.8M in TriSalus Life Sciences shares during Q4 2025, with no institutional selling. This unanimous buying from passive managers suggests index rebalancing or increased institutional interest, but provides weaker directional signal than active fund clusters.
Key Financial Metrics
Institutional Positions
Net institutional flow: $15.8M
▲ Buyers (5)
| Institution | Action | Change | Position Value | Value Δ |
|---|---|---|---|---|
| BlackRock | ADD | +94.7% | $10.7M | $7.0M |
| Vanguard | ADD | +32% | $10.7M | $5.3M |
| Morgan Stanley | DOUBLED | +1931.8% | $2.5M | $2.5M |
| State Street | ADD | +37.4% | $1.8M | $951.0K |
| Fidelity | DOUBLED | +4109% | $75.0K | $74.0K |
Key Facts
- 5 passive funds added positions totaling $15.8M net inflow
- No institutional sellers in this cluster
- Largest additions: BlackRock (+$7.0M), Vanguard (+$5.3M), Morgan Stanley (+$2.5M)
- All buyers are mega-passive index managers (Vanguard, BlackRock, State Street, Fidelity, Morgan Stanley)
Financial Impact
Net buying of $15.8M across 5 institutions, representing ~7.2% of market cap
Risk Factors
- Passive buying may be driven by index rebalancing, not fundamental thesis
- 13F disclosure is 45 days stale; positions may have been reduced since quarter-end
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 institutional 13F filing from SEC EDGAR.
| Document | Accession Number |
|---|---|
| INST-CLUSTER Data (Synthetic) | inst-cluster-TLSI-2025-Q4 |
Track record builds as more directional reports settle.
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Jun 11, 2026 19w ago | Institutional Cluster | $3.64 $5.00 | ▲ +37.36% | ▲ +32.97% | — |
Jun 11, 2026 19w ago | Institutional Cluster | $3.64 $5.00 | ▲ +37.36% | ▲ +32.97% | — |
Mar 11, 2026 33w ago | Insider Cluster | $4.16 $3.18 | ▼ −23.56% | ▼ −35.08% | — |
Mar 5, 2026 33w ago | 8-K | $4.47 $3.67 | ▼ −17.81% | ▼ −30.59% | — |
US Market Status
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