SAM BOSTON BEER CO INC
Executive Summary
Q3 2025 13F filings reveal a mixed institutional cluster for Boston Beer, with $76.7M in aggregate buying against $10.5M in net selling. Three passive/asset-manager buyers (Morgan Stanley doubling its stake to $49.4M, Ameriprise and Franklin adding) were partially offset by exits from Point72 and trims by UBS, Barclays, and Envestnet. The divergence between mega-passive accumulation and active quant/asset-manager reduction suggests fundamental uncertainty around SAM's core Truly/Boston Lager trajectory despite capital-return catalysts.
Key Financial Metrics
Institutional Positions
Net institutional flow: $36.2M
▲ Buyers (3)
| Institution | Action | Change | Position Value | Value Δ |
|---|---|---|---|---|
| Morgan Stanley | DOUBLED | +150.6% | $49.4M | $31.6M |
| Ameriprise Financial | ADD | +79.2% | $19.4M | $9.6M |
| Franklin Resources | ADD | +54.7% | $7.9M | $3.3M |
▼ Sellers (4)
| Institution | Action | Change | Prev Value | Value Δ |
|---|---|---|---|---|
| Point72 | EXIT | -100% | $12.1M | -$12.1M |
| Ubs Am, A Distinct Business Un | TRIM | -41.2% | $5.8M | -$2.0M |
| Barclays | TRIM | -67.3% | $10.0K | $3.6M |
| Envestnet Asset Management | TRIM | -40% | $1.4M | -$464.1K |
Actionable Insight
Watch for Q4 Q1 2026 13F updates to confirm whether Morgan Stanley's doubling was a one-off rebalance or a conviction build. The active-manager exits (especially Point72's full exit) suggest bearish fundamental views that passive flows alone may not offset in a 1.8B market-cap stock with 4% analyst bullish consensus. Monitor Truly-to-hard-seltzer market share data and any strategic pivot announcements.
Key Facts
- 3 institutions added $44.6M net in new SAM positions during Q3 2025, with Morgan Stanley doubling to $49.4M
- 4 institutions reduced holdings by ~$10.5M, including Point72's full exit of its $12.1M stake
- Aggregate buyer holdings reached $76.7M vs seller holdings declining to ~$8.3M
- Active managers (Point72, UBS, Barclays) predominantly sold, while mega-passive (Morgan Stanley) led buying
- The cluster follows cumulative T+20 losses exceeding 10% across several prior neutral reports on SAM
Financial Impact
Net institutional buying of $44.6M by 3 buyers (aggregating $76.7M in current holdings) partially offset by $10.5M in selling across 4 funds; total cluster value ~$85M
Risk Factors
- Active-manager selling (4 of 7 institutions) signals potential negative thesis on core product trajectory
- Mega-passive buyer (Morgan Stanley) may reflect index rebalancing rather than fundamental conviction
- SAM's valuation may face continued pressure from hard-seltzer category maturation and share losses
- Historical calibration shows SAM reports have underperformed SPY by -15.4% alpha at T+20 across prior settled reports
Market Snapshot
Documents Analyzed
This report is based on 1 institutional 13F filing from SEC EDGAR.
| Document | Accession Number |
|---|---|
| INST-CLUSTER Data (Synthetic) | inst-cluster-SAM-2025-Q3 |
Track record builds as more directional reports settle.
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
|
Jun 11, 2026
3d ago
|
Institutional Cluster
| $178.85 awaiting T+1 | awaiting T+1 | — | — |
|
Jun 4, 2026
10d ago
|
Press Release
| $161.08 $164.72 | ▲ +2.26% | ▲ +4.86% | — |
|
Jun 1, 2026
13d ago
|
8-K
| $162.44 $163.76 | ▲ +0.81% | ▲ +1.53% | — |
|
May 28, 2026
17d ago
|
Press Release
| $180.45 $177.28 | ▼ −1.76% | ▼ −2.00% | — |
|
May 11, 2026
4w ago
|
Press Release
| $188.54 $181.82 | ▼ −3.56% | ▼ −3.43% | — |
|
Apr 30, 2026
6w ago
|
Press Release
| $237.04 $214.30 | ▼ −9.59% | ▼ −9.81% | — |
|
Apr 27, 2026
6w ago
|
Press Release
| $240.15 $238.21 | ▼ −0.81% | ▼ −0.32% | — |
|
Apr 10, 2026
9w ago
|
8-K
| $243.13 $236.38 | ▲ +2.78% | ▲ +3.99% | — |
|
Apr 10, 2026
9w ago
|
DEFA14A
| $257.21 $243.13 | ▼ −5.47% | ▼ −6.45% | — |
|
Apr 8, 2026
9w ago
|
Press Release
| $250.59 $260.05 | ▲ +3.78% | ▲ +3.20% | — |
US Market Status
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