Boston Common Asset Management
Boston Common Asset Management reported 181 stocks worth $1.7B in its 13F filing for Q3 2026, filed Oct 13, 2026. Its largest holdings are TSM (6.7%), MSFT (5.0%) and NVDA (4.8%). Compared with Q2 2026, the fund added to MSFT, AAPL and GOOGL, trimmed TSM, NVDA and GOOG and sold out of CRH, AON and ASAZY.
Holdings
| # | Stock | Value | Weight | Shares | Change | Shares, 8 qtrs | Held |
|---|---|---|---|---|---|---|---|
| 1 |  TSM Taiwan Semiconductor Mfg Ltd | $116M | 6.7% | 255K | −11K (−4%) | 8 of 8 | |
| 2 |  MSFT Microsoft Corp | $86M | 5.0% | 168K | +9,884 (+6%) | 8 of 8 | |
| 3 |  NVDA Nvidia Corporation | $82.4M | 4.8% | 361K | −4,023 (−1%) | 8 of 8 | |
| 4 |  AAPL Apple Inc | $77.8M | 4.5% | 234K | +8,640 (+4%) | 8 of 8 | |
| 5 |  GOOGL Alphabet Inc | $51M | 3.0% | 148K | +5,716 (+4%) | 8 of 8 | |
| 6 |  AVGO Broadcom Inc | $42.7M | 2.5% | 121K | +8,422 (+7%) | 8 of 8 | |
| 7 |  GOOG Alphabet Inc | $36.3M | 2.1% | 106K | −3,704 (−3%) | 8 of 8 | |
| 8 |  V Visa Inc | $32.9M | 1.9% | 92K | +2,692 (+3%) | 8 of 8 | |
| 9 |  MRK Merck & Co Inc | $31.2M | 1.8% | 215K | +17K (+8%) | 8 of 8 | |
| 10 |  MU Micron Technology Inc | $30M | 1.7% | 28K | +4,630 (+20%) | 8 of 8 |
Positions at Sep 30, 2026, as reported. Change is against the fund's Q2 2026 filing; weight is the share of the fund's reported stocks.
Sold out
held in Q2 2026, gone in Q3 2026| Stock | Value last quarter | Shares sold |
|---|---|---|
 CRH Crh PLC | $17.4M | 163K |
 AON Aon PLC | $7.9M | 24K |
 ASAZY Assa Abloy Unsp Adr Ea Repr 0.50 Ord Shs | $3.7M | 210K |
 JRONY Jeronimo Martins-Unspon ADR | $2.1M | 54K |
 MBGYY Mercedes Benz Group AG Funsponsored ADR 1 ADR Rep 0 | $1.7M | 137K |
🔒 Free account: see all 13.
Reported value
last 8 quartersThe value of the US stocks the fund reported, at quarter end prices. It moves with the market as well as with buying and selling.
Filings for Q3 2026
straight from the SEC| Filed | Form | Quarter | |
|---|---|---|---|
| Oct 13, 2026 | 13F-HR | Q3 2026 | SEC filing ↗ |
Other superinvestors
All hedge fund holdings →Boston Common Asset Management 13F FAQ
What does Boston Common Asset Management own?
Boston Common Asset Management reported 181 stocks worth $1.7B in its 13F filing for Q3 2026, filed Oct 13, 2026. Its largest holdings are TSM (6.7%), MSFT (5.0%) and NVDA (4.8%). The table above lists every position in the filing (the top 10 without an account).
What did Boston Common Asset Management buy and sell in Q3 2026?
Compared with Q2 2026: 8 new positions, 107 added to, 49 trimmed and 13 sold out. It sold all of CRH, AON and ASAZY.
When will Boston Common Asset Management file its next 13F?
Holdings as of Dec 31, 2026 are due by Feb 15, 2027. The filing appears on this page within minutes of reaching the SEC.
How much is Boston Common Asset Management's portfolio worth?
The Q3 2026 filing reports $1.7B in US stocks. That leaves out cash, bonds, short positions and most foreign holdings, so the fund's total assets are usually larger.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Holdings come from the fund's SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. The fund may have changed its positions since. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.