The breadth and conviction of institutional selling (3 near-exits/trims >50%) outweighs the single buyer. Monitor for further institutional distribution or a catalyst that could reverse the selling pattern. The 91% analyst bullish consensus creates a potential divergence risk if fundamentals disappoint.
Executive Summary
A significant institutional cluster in ATRO shows 6 sellers vs 1 buyer during Q3 2025, with net selling of ~$44.5M. The selling is dominated by mega-passive funds (BofA, UBS, Morgan Stanley) and quant funds (Citadel, RenTech, Two Sigma), while the sole buyer is Schwab (mega-passive) doubling its position. This broad-based reduction suggests a coordinated de-risking or thesis deterioration, particularly notable given the 91% analyst bullish consensus.
Key Financial Metrics
Institutional Positions
Net institutional flow: -$34.5M
▲ Buyers (1)
| Institution | Action | Change | Position Value | Value Δ |
|---|---|---|---|---|
| Schwab | DOUBLED | +218.4% | $13.1M | $10.1M |
▼ Sellers (6)
| Institution | Action | Change | Prev Value | Value Δ |
|---|---|---|---|---|
| BofA | NEAR_EXIT | -94.9% | $22.9M | -$21.3M |
| UBS | NEAR_EXIT | -82.8% | $12.8M | -$9.8M |
| Citadel | TRIM | -67.4% | $15.5M | -$8.6M |
| RenTech | TRIM | -52.3% | $11.5M | -$4.0M |
| Two Sigma | TRIM | -49.5% | $4.0M | -$1.3M |
| Morgan Stanley | TRIM | -25% | $22.2M | $481.0K |
Key Facts
- 6 institutional sellers vs 1 buyer in Q3 2025
- Net institutional selling of approximately $44.5M
- BofA nearly exited (-94.9% shares, sold ~$21.3M)
- UBS near-exit (-82.8% shares, sold ~$9.8M)
- Citadel trimmed 67.4% of position ($8.6M sold)
- RenTech trimmed 52.3% ($4.0M sold)
- Two Sigma trimmed 49.5% ($1.3M sold)
- Only buyer: Schwab doubled position (+$10.1M)
- Morgan Stanley trimmed 25% but value increased slightly (+$0.5M) due to price movement
Financial Impact
6 institutional sellers reduced holdings by approximately $44.5M in aggregate, while 1 buyer added $10.1M, resulting in net institutional outflow of ~$34.4M
Risk Factors
- 13F data is 45+ days stale; positions may have been adjusted since quarter-end
- Selling dominated by passive/quant funds, which may reflect mechanical rebalancing rather than fundamental thesis breakage
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-ATRO-2025-Q3 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 21, 2026 5d ago | Institutional Cluster | $59.20 | awaiting T+60 | — | — |
Oct 8, 2026 18d ago | SC 13G/A | $64.45 | awaiting T+60 | — | — |
Jun 11, 2026 19w ago | Institutional Cluster | $96.00 $94.73 | ▼ −1.33% | ▼ −4.11% | — |
Jun 11, 2026 19w ago | Institutional Cluster | $94.80 $95.23 | ▼ −0.45% | ▲ +3.37% | — |
Feb 28, 2026 34w ago | Institutional Cluster | $81.35 $84.44 | ▲ +3.80% | ▼ −5.53% | — |
Feb 24, 2026 34w ago | 8-K | $78.84 $84.99 | ▲ +7.80% | ▲ +0.85% | — |
US Market Status
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