Northstar Asset Management Inc holds a focused book of 91 stocks worth $341.2M as of Q2 2026 (disclosed Jul 28, 2026, a ~45-day 13F lag). This quarter they opened Affirm Holdings Inc and trimmed Alphabet Inc-CL A. Their largest long position is Ishares Esg Msci KLD 400 ETF at 12% of the equity book. Cloning the disclosed picks since 2025 would be +5% (+4.4%/yr). That is a simulation of the disclosed long book, not audited returns.
The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This fund page is the Follow view. The Build view lets your agent pull holdings, quarter changes, overlap, and source filings through API or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/funds/869304/holdings"
Use Arkolith to show NORTHSTAR ASSET MANAGEMENT INC's latest holdings, largest changes, and filing provenance.
Following at the filing date actually beat the quarter-end book by 4.3 points over this window.
Growth of $10,000 cloning Northstar Asset Management Inc's disclosed long 13F book, rebalanced on each filing date (so it reflects the ~45-day reporting lag, no look-ahead), total-return basis (dividends reinvested), derived from end-of-day prices. “Their reported book” values the same picks from quarter-end, before they were public. S&P 500 is SPY total return over the same window. Excludes shorts, cash, options and non-13F holdings. Not investment advice.
Top-heavy: focused book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
77% mapped to company sectors
Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.
Estimated $ traded · quarter-end prices, no cost basis
Other tracked managers holding the same core names as Northstar Asset Management Inc
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| BlackRock, Inc. | 80 / 80 | $2.2T |
| FMR LLC | 80 / 80 | $772.1B |
| MORGAN STANLEY | 80 / 80 | $579.4B |
| JPMORGAN CHASE & CO | 80 / 80 | $531.9B |
| BANK OF AMERICA CORP /DE/ | 80 / 80 | $382.4B |
| GOLDMAN SACHS GROUP INC | 80 / 80 | $276.2B |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME | 80 / 80 | $215.5B |
| Bank of New York Mellon Corp | 80 / 80 | $202.0B |
Ranked by how many of Northstar Asset Management Inc's top 80 disclosed names each fund also holds: a cross-fund conviction signal from the latest 13F of every tracked manager.
Bars show each stock's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | Ishares TR ESG MSCI KLD ETF | $39.9M | 279.9K | 11.7% | ▲+32% Added · +68K sh | |
| 2 | Alphabet Inc CAP STK CL A | $24.6M | 68.9K | 7.2% | ▼−8.1% Reduced · −6K sh | |
| 3 | Vanguard World FD ESG INTL STK ETF | $20.1M | 244.1K | 5.9% | ▲+32% Added · +60K sh | |
| 4 | Apple Inc COM | $18.8M | 64.8K | 5.5% | ▼−7.8% Reduced · −5K sh | |
| 5 | Microsoft Corp COM | $15.6M | 41.9K | 4.6% | ▼−3.2% Reduced · −1K sh | |
| 6 | Costco Wholesale Corporation COM | $13.1M | 14.0K | 3.8% | ▼−9.4% Reduced · −1K sh | |
| 7 | TJX Cos Inc New COM | $12.3M | 81.4K | 3.6% | ▼−11% Reduced · −10K sh | |
| 8 | Linde PLC SHS | $12.1M | 23.3K | 3.5% | ▼−13% Reduced · −3K sh | |
| 9 | Stryker Corporation COM | $10.6M | 33.6K | 3.1% | ▼−6.1% Reduced · −2K sh | |
| 10 | Berkshire Hathaway Inc Del CL A | $10.5M | 14 | 3.1% | —Held | |
| 11 | Eaton Corp PLC SHS | $9.3M | 21.8K | 2.7% | ▼−17% Reduced · −5K sh | |
| 12 | Home Depot Inc COM | $8.6M | 24.5K | 2.5% | ▼−6.5% Reduced · −2K sh | |
| 13 | Canadian Natl Ry Co COM | $8.5M | 71.4K | 2.5% | ▼−11% Reduced · −9K sh | |
| 14 | Automatic Data Processing In COM | $7.8M | 35.0K | 2.3% | ▼−32% Reduced · −16K sh | |
| 15 | Advanced Micro Devices Inc COM | $7.7M | 13.2K | 2.2% | ▼−2.2% Reduced · −292 sh | |
| 16 | Datadog Inc CL A COM | $7.4M | 28.5K | 2.2% | —Held | |
| 17 | Taiwan Semiconductor Manufac SPONSORED ADS | $7.3M | 15.4K | 2.2% | ▲+10% Added · +1K sh | |
| 18 | Xylem Inc COM | $7.0M | 59.5K | 2.1% | ▼−8.6% Reduced · −6K sh | |
| 19 | Vanguard Index FDS S&P 500 ETF SHS | $7.0M | 10.2K | 2.1% | —Held | |
| 20 | Idexx Labs Inc COM | $6.3M | 11.9K | 1.8% | ▼−6.2% Reduced · −793 sh | |
| 21 | Ishares Inc ESG AWR MSCI EM | $5.5M | 100.2K | 1.6% | ▲+26% Added · +21K sh | |
| 22 | Nvidia Corporation COM | $5.0M | 25.0K | 1.5% | ▲+113% Added · +13K sh | |
| 23 | Veralto Corp COM SHS | $4.7M | 52.7K | 1.4% | ▼−17% Reduced · −11K sh | |
| 24 | Unilever PLC SPON ADR NEW | $4.2M | 69.7K | 1.2% | ▼−27% Reduced · −26K sh | |
| 25 | Palo Alto Networks Inc COM | $3.9M | 11.3K | 1.1% | ▼−13% Reduced · −2K sh | |
| 26 | Badger Meter Inc COM | $3.6M | 24.3K | 1.1% | ▼−3.6% Reduced · −921 sh | |
| 27 | Digital Rlty TR Inc COM | $3.6M | 19.8K | 1.0% | ▼−13% Reduced · −3K sh | |
| 28 | Nasdaq Inc COM | $3.4M | 43.0K | 1.0% | ▼−25% Reduced · −14K sh | |
| 29 | Mercadolibre Inc COM | $3.3M | 1.9K | 1.0% | ▲+2.3% Added · +44 sh | |
| 30 | Intuit COM | $3.0M | 11.4K | 0.9% | ▼−11% Reduced · −1K sh | |
| 31 | Kla Corp COM NEW | $2.8M | 9.3K | 0.8% | ▲10× Added · +8K sh | |
| 32 | Broadcom Inc COM | $2.7M | 7.1K | 0.8% | ▲+747% Added · +6K sh | |
| 33 | Icici Bank Limited ADR | $2.5M | 86.7K | 0.7% | ▼−40% Reduced · −57K sh | |
| 34 | Novo-Nordisk A S ADR | $2.5M | 51.8K | 0.7% | ▼−24% Reduced · −16K sh | |
| 35 | Arista Networks Inc COM SHS | $2.4M | 14.4K | 0.7% | ▼−30% Reduced · −6K sh | |
| 36 | California WTR SVC Group COM | $2.3M | 48.2K | 0.7% | ▼−20% Reduced · −12K sh | |
| 37 | Berkshire Hathaway Inc Del CL B NEW | $2.2M | 4.4K | 0.6% | ▲+7.4% Added · +301 sh | |
| 38 | Winmark Corp COM | $1.7M | 4.1K | 0.5% | ▼−36% Reduced · −2K sh | |
| 39 | Middlesex WTR Co COM | $1.6M | 28.0K | 0.5% | ▼−27% Reduced · −10K sh | |
| 40 | Salesforce Inc COM | $1.6M | 10.0K | 0.5% | ▼−50% Reduced · −10K sh | |
| 41 | Alphabet Inc CAP STK CL C | $1.5M | 4.1K | 0.4% | ▲+13% Added · +489 sh | |
| 42 | Sprouts FMRS MKT Inc COM | $1.4M | 16.4K | 0.4% | ▼−28% Reduced · −7K sh | |
| 43 | Broadridge Finl Solutions In COM | $1.4M | 9.9K | 0.4% | ▼−44% Reduced · −8K sh | |
| 44 | Zoom Communications Inc CL A | $1.1M | 12.4K | 0.3% | ▼−17% Reduced · −3K sh | |
| 45 | Danaher Corp Del COM | $952K | 5.0K | 0.3% | ▼−59% Reduced · −7K sh | |
| 46 | WW Grainger Inc COM | $933K | 686 | 0.3% | —Held | |
| 47 | Cisco Sys Inc COM | $859K | 7.3K | 0.3% | ▼−12% Reduced · −976 sh | |
| 48 | Affirm Hldgs Inc COM CL A | $816K | 10.0K | 0.2% | ▲New New position | |
| 49 | Eastern Bankshares Inc COM | $766K | 34.4K | 0.2% | ▼−87% Reduced · −225K sh | |
| 50 | Magnum Ice Cream Co NV ORD SHS | $672K | 38.6K | 0.2% | ▼−4.4% Reduced · −2K sh |
As-of date vs the date the SEC received each filing
| Quarter | As of | Filed | Positions | Value | Form |
|---|---|---|---|---|---|
| Q2 2026 | Jun 30, 2026 | Jul 28, 2026 | 91 | $341.2M | 13F-HR |
| Q1 2026 | Mar 31, 2026 | May 13, 2026 | 86 | $325.9M | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Feb 12, 2026 | 88 | $387.2M | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Oct 30, 2025 | 70 | $384.6M | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Jul 31, 2025 | 61 | $361.8M | 13F-HR |
| Q1 2025 | Mar 31, 2025 | Jul 15, 2025 | 58 | $338.0M | 13F-HR/A |
| Q4 2024 | Dec 31, 2024 | Jul 15, 2025 | 58 | $380.9M | 13F-HR/A |
| Q3 2024 | Sep 30, 2024 | Jul 15, 2025 | 58 | $407.2M | 13F-HR/A |
Holdings from SEC EDGAR 13F-HR filings, updated quarterly ~45 days after quarter-end. Public domain. The book and weighting are long equity only; disclosed put/call options are listed separately and excluded from those totals. The performance line is a simulation of the disclosed long book, not an audited return.