The heavy selling by Calamos Advisors (74.2% trim, $4.8M) is the dominant signal here — a top-2 holder exiting a large position. With no insider buying and a divergent 13F × Form 4 score, this suggests informed institutional de-risking. Monitor for further 13F filings in Q3 to see if the selling accelerates or stabilizes. The 94% bullish analyst consensus creates a potential contrarian setup if the selling reflects non-public concerns.
Executive Summary
Institutional activity in AMPX for 2026-Q2 shows a mixed picture with 2 small buyers adding $51K in net new positions while 3 sellers trimmed $5.1M, led by Calamos Advisors cutting 74.2% of its stake ($4.8M reduction). The selling is concentrated and large in absolute terms relative to buying, suggesting institutional de-risking despite the stock's strong analyst consensus (94% bullish). The cluster is dominated by active managers, but the net dollar flow is heavily negative, and no insider buying corroborates the thesis — the 13F × Form 4 confluence score is 0/100 (divergent).
Key Financial Metrics
Institutional Positions
Net institutional flow: -$5.0M
▲ Buyers (2)
| Institution | Action | Change | Position Value | Value Δ |
|---|---|---|---|---|
| Police & Firemen's Retirement System Of New | ADD | +28.4% | $562.0K | $29.0K |
| Td Waterhouse Canada | DOUBLED | +355.6% | $29.0K | $21.0K |
▼ Sellers (3)
| Institution | Action | Change | Prev Value | Value Δ |
|---|---|---|---|---|
| Calamos Advisors | TRIM | -74.2% | $6.1M | -$4.8M |
| Commonwealth Equity Services | TRIM | -31.2% | $467.0K | -$202.6K |
| Farther Finance Advisors | TRIM | -35.3% | $34.0K | -$14.4K |
Key Facts
- 2 buyers added $51K in net new positions (Police & Firemen's Retirement System +$29K, TD Waterhouse Canada +$21K)
- 3 sellers trimmed $5.1M, led by Calamos Advisors cutting 74.2% of its stake ($4.8M reduction)
- Commonwealth Equity Services trimmed 31.2% ($203K reduction); Farther Finance Advisors trimmed 35.3% ($14K reduction)
- Net institutional flow is heavily negative: $51K buying vs $5.1M selling
- No insider buying corroborates the institutional cluster (13F × Form 4 confluence score 0/100, divergent)
- Analyst consensus is 94% bullish (4 Strong Buy, 11 Buy, 1 Hold) — a contrarian indicator given the selling
Financial Impact
3 institutional sellers reduced positions by $5.1M while 2 buyers added $51K, for a net institutional outflow of approximately $5.0M in 2026-Q2
Risk Factors
- Calamos Advisors' 74.2% trim could signal deteriorating fundamentals or a catalyst the market hasn't priced in
- No insider buying to offset the institutional selling suggests management is not signaling confidence
- 13F data has a 45-day lag; positions may have changed further since quarter-end
- The small buyer base ($591K total) provides minimal support against $5.1M in selling pressure
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-AMPX-2026-Q2 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 9, 2026 17d ago | S-3ASR | $8.87 | awaiting T+60 | — | — |
Sep 25, 2026 4w ago | 8-K | $9.60 | awaiting T+60 | — | — |
Aug 25, 2026 8w ago | Insider Cluster | $10.20 | awaiting T+60 | — | — |
Aug 13, 2026 10w ago | 8-K | $12.51 | awaiting T+60 | — | — |
Aug 1, 2026 12w ago | Institutional Cluster | $10.12 | awaiting T+60 | — | — |
Jun 11, 2026 19w ago | Insider Cluster | $16.31 $10.39 | ▼ −36.30% | ▼ −39.56% | — |
Jun 11, 2026 19w ago | Institutional Cluster | $17.10 $9.89 | ▼ −42.16% | ▼ −46.56% | — |
Jun 8, 2026 20w ago | 144 | $4.84 | awaiting T+60 | — | — |
May 28, 2026 21w ago | 144 | — | awaiting T+60 | — | — |
May 28, 2026 21w ago | Insider Cluster | $20.28 $9.86 | ▲ +51.38% | ▲ +52.56% | — |
US Market Status
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