The cluster is directionally bullish but extremely concentrated in Wellington Management — a single-fund-driven signal, not a broad consensus. An active manager doubling a $16M position to $43M is notable, but until more diverse institutions accumulate (5+ active funds), treat this as an incremental data point, not a trading catalyst. Monitor next 13F season for Wellington changes and Q1 operational results.
Executive Summary
Latham Group (SWIM) saw a mixed institutional cluster in Q4 2025: Wellington Management doubled its position to $42.9M (+$26.6M), while three passive managers trimmed $4.1M. The aggregate net buying of $23.2M is heavily concentrated in one active asset manager.
Key Financial Metrics
Institutional Positions
Net institutional flow: $19.1M
▲ Buyers (4)
| Institution | Action | Change | Position Value | Value Δ |
|---|---|---|---|---|
| Wellington Management Group | DOUBLED | +216.4% | $42.9M | $26.6M |
▼ Sellers (3)
| Institution | Action | Change | Prev Value | Value Δ |
|---|---|---|---|---|
| Invesco | TRIM | -74.2% | $3.5M | -$2.8M |
| Fund 1 | TRIM | -30.2% | $1.9M | -$796.5K |
| Morgan Stanley | TRIM | -32.2% | $1.1M | -$478.8K |
Key Facts
- 4 institutional buyers vs 3 sellers in Q4 2025
- Wellington Management Group doubled shares to 6.75M, now holding $42.9M (97% of all buying value)
- Net cluster flow: +$23.2M aggregate buying minus $4.1M selling = +$19.1M net inflow
- Two of three sellers are mega-passive index funds (Invesco, Morgan Stanley), reducing signal strength
Financial Impact
4 institutions accumulated $44.2M in new holdings (net change +$27.3M), while 3 institutions reduced holdings by $4.1M. Net institutional inflow of ~$19.1M into the stock.
Risk Factors
- Wellington's position may already be unwound (13F filed 45 days after quarter-end)
- Passive-driven selling (Invesco, Morgan Stanley) may reflect index rebalancing rather than fundamental negative thesis
- Highly concentrated signal (single fund = 97% of buying $) limits conviction in a broad reassessment
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-SWIM-2025-Q4 |
Track record builds as more directional reports settle.
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 6, 2026 21d ago | SC 13G/A | $6.39 | awaiting T+60 | — | — |
Aug 21, 2026 9w ago | 8-K | $7.03 | awaiting T+60 | — | — |
Aug 19, 2026 9w ago | 3 | $7.19 | awaiting T+60 | — | — |
Jun 11, 2026 19w ago | Institutional Cluster | $5.69 $7.10 | ▲ +24.78% | ▲ +20.38% | — |
May 21, 2026 22w ago | Insider Cluster | $5.16 $7.13 | ▲ +38.18% | ▲ +33.88% | — |
Mar 20, 2026 31w ago | DEFA14A | $5.55 $5.45 | ▼ −1.80% | ▼ −16.22% | — |
Mar 3, 2026 33w ago | Press Release | $7.20 $5.43 | ▼ −24.58% | ▼ −34.67% | — |
Mar 3, 2026 33w ago | Press Release | $7.20 $5.43 | ▼ −24.58% | ▼ −34.67% | — |
US Market Status
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