Prospect Hill Management, LLC holds a concentrated book of 14 stocks worth $257.5M as of Q2 2026 (disclosed Aug 6, 2026, a ~37-day 13F lag). This quarter they opened NXP Semiconductors NV and trimmed Bank Of America Corp. Their largest long position is Apple Inc at 57% of the equity book.
Top-heavy: concentrated book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
100% 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 Prospect Hill Management, LLC
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| BlackRock, Inc. | 17 / 14 | $1.6T |
| STATE STREET CORP | 17 / 14 | $935.8B |
| FMR LLC | 17 / 14 | $635.9B |
| GEODE CAPITAL MANAGEMENT, LLC | 17 / 14 | $555.8B |
| JPMORGAN CHASE & CO | 17 / 14 | $352.5B |
| MORGAN STANLEY | 17 / 14 | $336.3B |
| PRICE T ROWE ASSOCIATES INC /MD/ | 17 / 14 | $291.8B |
| NORTHERN TRUST CORP | 17 / 14 | $209.8B |
Ranked by the share of each fund's own book sitting in the names it shares with Prospect Hill Management, LLC: only funds sharing at least a tenth of the book qualify. Index giants, bank custody books and market makers are excluded. They hold everything, so their overlap says nothing.
Bars show each stock's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | Apple Inc COM | $146.4M | 505.8K | 56.8% | ▲+0.1% Added · +366 sh | |
| 2 | Tesla Inc COM | $42.4M | 100.8K | 16.5% | ▲+0.2% Added · +170 sh | |
| 3 | Amazon Com Inc COM | $12.6M | 52.8K | 4.9% | ▲+0.1% Added · +50 sh | |
| 4 | Nvidia Corporation COM | $12.4M | 61.8K | 4.8% | ▲+94% Added · +30K sh | |
| 5 | Alphabet Inc CAP STK CL C | $10.6M | 30.0K | 4.1% | —Held | |
| 6 | Alphabet Inc CAP STK CL A | $10.0M | 28.0K | 3.9% | ▲+0.5% Added · +150 sh | |
| 7 | Intuitive Surgical Inc COM NEW | $5.9M | 14.8K | 2.3% | ▲+1.7% Added · +250 sh | |
| 8 | Bank Of America Corp COM | $5.3M | 92.5K | 2.0% | ▼−21% Reduced · −25K sh | |
| 9 | Netflix Inc COM | $4.5M | 63.5K | 1.8% | ▲+1.6% Added · +1K sh | |
| 10 | Mastercard Incorporated CL A | $3.0M | 5.8K | 1.2% | ▼−7.9% Reduced · −500 sh | |
| 11 | Thermo Fisher Scientific Inc COM | $1.5M | 3.0K | 0.6% | —Held | |
| 12 | Meta Platforms Inc CL A | $1.3M | 2.4K | 0.5% | ▼−1.0% Reduced · −25 sh | |
| 13 | Palantir Technologies CL A | $1.2M | 9.9K | 0.5% | ▲+124% Added · +6K sh | |
| 14 | American Express COM | $465K | 1.4K | 0.2% | —Held |
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/1837320/holdings"
Use Arkolith to show Prospect Hill Management, LLC's latest holdings, largest changes, and filing provenance.
As-of date vs the date the SEC received each filing
| Quarter | As of | Filed | Positions | Value | Form |
|---|---|---|---|---|---|
| Q2 2026 | Jun 30, 2026 | Aug 6, 2026 | 14 | $257.5M | 13F-HR |
| Q1 2026 | Mar 31, 2026 | May 6, 2026 | 14 | $224.4M | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Jan 29, 2026 | 13 | $247.4M | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Nov 7, 2025 | 14 | $234.0M | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Aug 11, 2025 | 15 | $193.8M | 13F-HR |
| Q1 2025 | Mar 31, 2025 | May 5, 2025 | 15 | $192.0M | 13F-HR |
| Q4 2024 | Dec 31, 2024 | Feb 11, 2025 | 16 | $227.4M | 13F-HR |
| Q3 2024 | Sep 30, 2024 | Nov 5, 2024 | 16 | $199.2M | 13F-HR |
Holdings from SEC EDGAR 13F-HR filings, updated quarterly, filed up to 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. Price-derived performance is withheld until the price-source policy and freshness gate are green.