Institutional Manager · CIK 0001082621
HARVARD MANAGEMENT CO INC
BOSTON, MA · File #028-03879
Latest AUM
$2.08B
Positions
19
Top-10 Concentration
86.9%
Filings
9
Portfolio Value Over Time
2024-03
2024-06
2024-09
2024-12
2025-03
2025-06
2025-09
2025-12
Biggest QoQ Changes
Ranked by conviction flow (share change × current price) so mark-to-market moves don't dominate. Price effect column shows how much of the $ change was just the stock moving.
| Action | Issuer | Ticker / CUSIP | Δ Shares | Flow ($) | Price Effect |
|---|---|---|---|---|---|
| NEW | UNION PAC CORP | UNP | +611,233 | +$141.4M | $0 |
| EXITED | LIGHT & WONDER INC | 80874P109 | -1,125,210 | -$94.5M | $0 |
| REDUCE | AMAZON COM INC | AMZN | -391,255 | -$90.3M | +$12.0M |
| NEW | ISHARES ETHEREUM TR | 46438R105 | +3,870,900 | +$86.8M | $0 |
| ADD | BROADCOM INC | AVGO | +221,866 | +$76.8M | +$1.6M |
| REDUCE | ISHARES BITCOIN TRUST ETF | IBIT | -1,460,000 | -$72.5M | -$104.6M |
| REDUCE | MICROSOFT CORP | MSFT | -133,622 | -$64.6M | -$21.4M |
| ADD | ALPHABET INC | GOOG | +161,700 | +$50.6M | +$45.2M |
| REDUCE | NVIDIA CORPORATION | NVDA | -173,640 | -$32.4M | -$46,714 |
| ADD | TAIWAN SEMICONDUCTOR MFG LTD | 874039100 | +95,006 | +$28.9M | +$5.2M |
Sector Allocation
Filing History
- 13F HOLDINGS REPORTQ/E Dec 202519 pos · $2.08B
- 13F HOLDINGS REPORTQ/E Sep 202518 pos · $2.10B
- 13F HOLDINGS REPORTQ/E Jun 202514 pos · $1.44B
- 13F HOLDINGS REPORTQ/E Mar 202514 pos · $1.13B
- 13F HOLDINGS REPORTQ/E Dec 202416 pos · $1.69B
- 13F HOLDINGS REPORTQ/E Sep 202415 pos · $1.74B
- 13F HOLDINGS REPORTQ/E Jun 202415 pos · $1.66B
- 13F HOLDINGS REPORTQ/E Mar 202412 pos · $1.59B
- 13F HOLDINGS REPORTQ/E Dec 202322 pos · $885.8M
Top 19 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | ISHARES BITCOIN TRUST ETF | IBIT | 5,353,612 | $265.8M | 12.78% |
| 2 | ALPHABET INC | GOOG | 807,900 | $252.9M | 12.16% |
| 3 | SPDR GOLD TR | GLD | 626,450 | $248.3M | 11.94% |
| 4 | MICROSOFT CORP | MSFT | 489,678 | $236.8M | 11.39% |
| 5 | BOOKING HOLDINGS INC | BKNG | 33,658 | $180.2M | 8.67% |
| 6 | AMAZON COM INC | AMZN | 679,845 | $156.9M | 7.55% |
| 7 | UNION PAC CORP | UNP | 611,233 | $141.4M | 6.80% |
| 8 | META PLATFORMS INC | META | 181,765 | $120.0M | 5.77% |
| 9 | BROADCOM INC | AVGO | 321,766 | $111.4M | 5.36% |
| 10 | TAIWAN SEMICONDUCTOR MFG LTD | 874039100 | 306,796 | $93.2M | 4.48% |
| 11 | ISHARES ETHEREUM TR | 46438R105 | 3,870,900 | $86.8M | 4.18% |
| 12 | NVIDIA CORPORATION | NVDA | 410,291 | $76.5M | 3.68% |
| 13 | ZILLOW GROUP INC | Z | 662,045 | $45.2M | 2.17% |
| 14 | FLUTTER ENTMT PLC | G3643J108 | 115,481 | $24.8M | 1.19% |
| 15 | ZILLOW GROUP INC | Z | 301,122 | $20.5M | 0.99% |
| 16 | KLARNA GROUP PLC | KLAR | 459,163 | $13.3M | 0.64% |
| 17 | 10X GENOMICS INC | TXG | 170,000 | $2.8M | 0.13% |
| 18 | FIGMA INC | FIG | 50,454 | $1.9M | 0.09% |
| 19 | PURECYCLE TECHNOLOGIES INC | PCTTW | 714,285 | $549,999 | 0.03% |