Harvard Management Co. Inc.
In its 13F for Q3 2025 (holdings as of September 30, 2025, filed November 14, 2025), Harvard Management Co. Inc. reported 18 stock positions worth $2.1 billion. Its top holding was iShares Bitcoin Trust ETF (IBIT) at 21.0% of the portfolio, followed by Microsoft (MSFT, 15.3%) and Amazon.com (AMZN, 11.2%). Compared with Q2 2025, it opened 5 new positions, added to 3 and reduced 4. The biggest buy was iShares Bitcoin Trust ETF (IBIT, shares +257%) and the biggest sale Broadcom (AVGO, shares −48%).
- Most Recent 13F
- Q2 2026
- Location
- BOSTON, MA
- CIK
- 0001082621
- Portfolio Value
- $2.1B (Q3 2025)
- SEC Filing
- 0001193125-25-283114 ↗ filed Nov 14, 2025
Holdings Value
Holdings 18 stocks · $2.1B
| IBIT iShares Bitcoin Trust ETF | 21.04% | 6,813,612 | $442.9M | Add +257.5% |
| MSFT Microsoft Corp. | 15.34% | 623,300 | $322.8M | No change |
| AMZN Amazon.com Inc. | 11.17% | 1,071,100 | $235.2M | No change |
| GLD SPDR Gold Shares | 11.17% | 661,391 | $235.1M | Add +98.6% |
| BKNG Booking Holdings Inc. | 8.08% | 31,499 | $170.1M | No change |
| GOOGL Alphabet Inc. Class A | 7.46% | 646,200 | $157.1M | No change |
| META Meta Platforms Inc. Class A | 5.70% | 163,260 | $119.9M | No change |
| NVDA Nvidia Corp. | 5.18% | 583,931 | $108.9M | Reduce -11.6% |
| LNWO Light & Wonder Inc. | 4.49% | 1,125,210 | $94.5M | Add +81.1% |
| TSM Taiwan Semiconductor-SP ADR | 2.81% | 211,790 | $59.2M | New |
| Z Zillow Group Inc. Class C | 2.42% | 662,045 | $51.0M | New |
| AVGO Broadcom Inc. | 1.57% | 99,900 | $33.0M | Reduce -48.2% |
| FLUT Flutter Entertainment PLC-Di | 1.39% | 115,481 | $29.3M | New |
| ZG Zillow Group Inc. Class A | 1.06% | 301,122 | $22.4M | New |
| KLAR Klarna Group PLC | 0.80% | 459,163 | $16.8M | New |
| PCT Purecycle Technologies Inc. | 0.11% | 714,285 | $2.4M | Reduce -62.5% |
| MAZE Maze Therapeutics Inc. | 0.11% | 92,396 | $2.4M | Reduce -85.5% |
| TXG 10X Genomics Inc. Class A | 0.09% | 170,000 | $2.0M | No change |
Portfolio Sells Q2 2025 → Q3 2025
Portfolio Buys Q2 2025 → Q3 2025
| IBIT iShares Bitcoin Trust ETF | Add +257.5% | 21.04% | +12.90 |
| GLD SPDR Gold Shares | Add +98.6% | 11.17% | +4.09 |
| TSM Taiwan Semiconductor-SP ADR | New | 2.81% | +2.81 |
| Z Zillow Group Inc. Class C | New | 2.42% | +2.42 |
| FLUT Flutter Entertainment PLC-Di | New | 1.39% | +1.39 |
| ZG Zillow Group Inc. Class A | New | 1.06% | +1.06 |
| KLAR Klarna Group PLC | New | 0.80% | +0.80 |
| LNWO Light & Wonder Inc. | Add +81.1% | 4.49% | +0.31 |
Notes & Other Activity Q2 2025 → Q3 2025
| PCTTW Purecycle Techno-CW26 | *W EXP 03/17/202 | Sold out | 714,285 | $3.0Mbefore exit |
Bonds, preferreds, convertibles and warrants; not part of the stock holdings or percentages above.
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 18 | $4.3B | SPCX, TSM, CBRS, AMZN, GOOGL |
| Q1 2026 | 16 | $1.8B | TSM, GLD, MSFT, GOOGL, UNP |
| Q4 2025 | 18 | $2.1B | IBIT, GOOGL, GLD, MSFT, BKNG |
| Q3 2025 | 18 | $2.1B | IBIT, MSFT, AMZN, GLD, BKNG |
| Q2 2025 | 13 | $1.4B | MSFT, AMZN, BKNG, META, IBIT |
| Q1 2025 | 13 | $1.1B | META, BKNG, MSFT, GOOGL, QQQ |
| Q4 2024 | 15 | $1.7B | META, QQQ, GOOGL, LNWO, NVDA |
| Q3 2024 | 14 | $1.7B | META, GOOGL, BKNG, LNWO, QQQ |
| Q2 2024 | 14 | $1.6B | META, QQQ, GOOGL, LNWO, AMD |
| Q1 2024 | 11 | $1.6B | GOOGL, META, QQQ, LNWO, NVDA |