The cluster shows no strong conviction — passive rebalancing likely drove most changes. Vanguard's doubling suggests a long-term index tilt, while Morgan Stanley's near-exit signals caution.
Executive Summary
Institutional cluster for AMPG reveals mixed activity in Q4 2025: Vanguard doubled its stake to $2.3M and Two Sigma more than tripled, while Morgan Stanley almost completely exited. Net buying of ~$502K is modest relative to the $193M market cap, and the divergence between large passive funds suggests uncertainty among institutional investors.
Key Financial Metrics
Institutional Positions
Net institutional flow: $502.2K
▲ Buyers (3)
| Institution | Action | Change | Position Value | Value Δ |
|---|---|---|---|---|
| Vanguard | DOUBLED | +151.4% | $2.3M | $1.1M |
| Two Sigma | DOUBLED | +279.3% | $346.0K | $228.0K |
| Dimensional Fund Advisors | ADD | +33.1% | $251.0K | $6.0K |
▼ Sellers (2)
| Institution | Action | Change | Prev Value | Value Δ |
|---|---|---|---|---|
| Morgan Stanley | NEAR_EXIT | -92% | $837.0K | -$785.0K |
| BofA | NEAR_EXIT | -99.5% | $12.0K | -$12.1K |
Key Facts
- 3 buyers: Vanguard (DOUBLED, now $2.3M), Two Sigma (DOUBLED, now $346K), Dimensional Fund Advisors (ADD, now $251K)
- 2 sellers: Morgan Stanley (NEAR_EXIT, from $837K to $52K), BofA (NEAR_EXIT, from $12K to $51)
- Aggregate buying value: $2.9M current holdings; net buying across cluster: ~$502K
- Active managers (Two Sigma, Dimensional) were net buyers, while both sellers were mega-passive funds
- Cluster size is small: combined holdings represent ~1.5% of market cap
Financial Impact
Net institutional buying of ~$502K over the quarter, with total buying-side holdings of $2.9M vs selling-side prior value of $849K
Risk Factors
- 13F data is 45 days stale; positions may have already reversed
- Low market cap and thin liquidity could amplify moves if new catalysts emerge
- Continued passive selling could pressure the stock
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-AMPG-2025-Q4 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 13, 2026 14d ago | DEFA14A | $2.67 $2.65 | ▼ −0.75% | ▲ +0.40% | — |
Oct 13, 2026 14d ago | DEF 14A | $2.67 $2.65 | ▲ +0.75% | ▼ −0.40% | — |
Oct 7, 2026 19d ago | SC 13G | $2.82 $2.57 | ▼ −9.04% | ▼ −8.77% | — |
Oct 6, 2026 21d ago | SC 13G | $2.96 $2.61 | ▼ −11.82% | ▼ −10.84% | — |
Aug 27, 2026 8w ago | Press Release | $3.74 $3.42 | ▼ −8.56% | ▼ −8.82% | — |
Aug 25, 2026 9w ago | Press Release | $3.62 $3.24 | ▼ −10.50% | ▼ −9.96% | — |
Aug 17, 2026 10w ago | 8-K | $3.70 $3.45 | ▼ −6.76% | ▼ −5.57% | — |
Aug 12, 2026 10w ago | 8-K | $5.99 $3.44 | ▲ +42.57% | ▲ +40.61% | — |
Jul 22, 2026 13w ago | 8-K | $6.34 $4.91 | ▼ −22.56% | ▼ −23.03% | — |
Jul 8, 2026 15w ago | 8-K | $6.58 $7.03 | ▲ +6.84% | ▲ +5.98% | — |
US Market Status
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