The mixed institutional cluster with net selling and no insider buying suggests the accumulation by Congress Asset Management and Millennium may be thesis-driven but is being offset by quant and active manager profit-taking.
Executive Summary
Archrock (AROC) saw a mixed institutional cluster in 2026-Q2: 12 buyers accumulated $130.3M in new positions, led by Congress Asset Management ($90.1M new stake) and Millennium ($21.5M added), while 10 sellers reduced holdings by $154.3M, led by Vaughan Nelson ($45.8M trimmed) and D.E. Shaw ($29.2M near-exit). The net conviction is mixed, with active managers on both sides and no insider buying to corroborate the accumulation.
Key Financial Metrics
Institutional Positions
Net institutional flow: -$24.0M
▲ Buyers (12)
| Institution | Action | Change | Position Value | Value Δ |
|---|---|---|---|---|
| Congress Asset Management | NEW | — | $90.1M | $90.1M |
| Millennium | DOUBLED | +333.4% | $26.8M | $21.5M |
| Citigroup | DOUBLED | +1022.6% | $15.1M | $13.9M |
▼ Sellers (10)
| Institution | Action | Change | Prev Value | Value Δ |
|---|---|---|---|---|
| Vaughan Nelson Investment Management | TRIM | -59.4% | $87.1M | -$45.8M |
| D.E. Shaw | NEAR_EXIT | -80.4% | $38.0M | -$29.2M |
| Citadel | TRIM | -58.7% | $44.9M | -$23.2M |
Key Facts
- 12 institutional buyers added $130.3M in new AROC positions in Q2 2026
- 10 institutional sellers reduced holdings by $154.3M, resulting in net selling of $24.0M
- Congress Asset Management initiated a new $90.1M position, the largest single move
- Vaughan Nelson trimmed $45.8M, the largest sell-side move
- No open-market insider buying detected in the window (confluence score 37/100, institutions_only)
- Analyst consensus is 93% bullish (13 Buy, 1 Hold)
Financial Impact
Net institutional selling of $24.0M in Q2 2026 ($130.3M in buying vs $154.3M in selling)
Risk Factors
- No insider buying to confirm institutional thesis
- Quant sellers (Citadel, D.E. Shaw) reducing positions may indicate mean-reversion or hedging
- 13F data is 45+ days stale; positions may have been unwound
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-AROC-2026-Q2 |
Track record builds as more directional reports settle.
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 22, 2026 4d ago | Press Release | $29.12 | awaiting T+60 | — | — |
Aug 21, 2026 9w ago | Institutional Cluster | $31.80 | awaiting T+60 | — | — |
Jul 23, 2026 13w ago | Press Release | $36.14 $29.39 | ▼ −18.68% | ▼ −22.41% | — |
Jul 15, 2026 14w ago | Press Release | $37.49 | awaiting T+60 | — | — |
May 19, 2026 22w ago | Insider Cluster | $38.04 $33.34 | ▲ +12.36% | ▲ +18.65% | — |
May 14, 2026 23w ago | 144 | $37.43 $32.99 | ▼ −11.86% | ▼ −16.38% | — |
May 11, 2026 24w ago | 8-K | $36.49 $33.93 | ▼ −7.02% | ▼ −11.41% | — |
Apr 20, 2026 27w ago | Press Release | $34.98 | awaiting T+60 | — | — |
Mar 30, 2026 30w ago | 144 | $34.28 $41.40 | ▲ +20.76% | ▲ +4.27% | — |
Mar 27, 2026 30w ago | 144 | $35.31 $38.12 | ▲ +7.97% | ▼ −8.10% | — |
US Market Status
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