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HARVARD MANAGEMENT CO INC

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13F filer, CIK 1082621, BOSTON, MA

HARVARD MANAGEMENT CO INC reported $1,815,664,370 across 17 holdings for the quarter ended 2026-03-31, in a 13F-HR filed 2026-05-15. Its ten largest share positions make up 90.49% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001193125-26-226658

Period
2026-03-31
Reported value
$1.82B
Holdings
17
Top 10 weight
90.49%
New
1
Sold out
3

Largest buys vs the previous quarter

SecurityShares changeApprox. value
TSMadded+380,000$128M
NVDAadded+333,500$58.2M
AVGOadded+152,150$47.1M
GENBnew+1,111,100$13.9M
MSFTadded+23,387$8.66M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
IBITreduced-2,309,000-$88.7M
ETHAexited-3,870,900-$86.8M
GLDreduced-162,000-$69.7M
GOOGLreduced-190,940-$54.9M
KLARexited-459,163-$13.3M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q1 2026

Share positions as resolved from 13F-HR 0001193125-26-226658, largest first. % of portfolio is the value over $1,815,664,370, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
TSMTAIWAN SEMICONDUCTOR MANUFACQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 488,790 shares; 2024Q4: 434,790 shares; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 211,790 shares; 2025Q4: 306,796 shares; 2026Q1: 686,796 shares 686,796$232M12.78%+380,000Timeline
GLDSPDR GOLD TRQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 333,000 shares; 2025Q3: 661,391 shares; 2025Q4: 626,450 shares; 2026Q1: 464,450 shares 464,450$200M11.01%-162,000Timeline
MSFTMICROSOFT CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 53,300 shares; 2025Q1: 420,000 shares; 2025Q2: 623,300 shares; 2025Q3: 623,300 shares; 2025Q4: 489,678 shares; 2026Q1: 513,065 shares 513,065$190M10.46%+23,387Timeline
GOOGLALPHABET INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 1,195,012 shares; 2024Q4: 686,812 shares; 2025Q1: 718,812 shares; 2025Q2: 646,200 shares; 2025Q3: 646,200 shares; 2025Q4: 807,900 shares; 2026Q1: 616,960 shares 616,960$177M9.77%-190,940Timeline
UNPUNION PAC CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 611,233 shares; 2026Q1: 634,376 shares 634,376$154M8.48%+23,143Timeline
AMZNAMAZON COM INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 67,500 shares; 2025Q1: not reported; 2025Q2: 1,071,100 shares; 2025Q3: 1,071,100 shares; 2025Q4: 679,845 shares; 2026Q1: 717,539 shares 717,539$149M8.23%+37,694Timeline
BKNGBOOKING HOLDINGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 36,900 shares; 2024Q4: 19,800 shares; 2025Q1: 37,600 shares; 2025Q2: 31,499 shares; 2025Q3: 31,499 shares; 2025Q4: 33,658 shares; 2026Q1: 34,928 shares 34,928$147M8.1%+1,270Timeline
AVGOBROADCOM INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 519,500 shares; 2024Q4: 374,700 shares; 2025Q1: 321,700 shares; 2025Q2: 192,700 shares; 2025Q3: 99,900 shares; 2025Q4: 321,766 shares; 2026Q1: 473,916 shares 473,916$147M8.08%+152,150Timeline
NVDANVIDIA CORPORATIONQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 947,831 shares; 2024Q4: 788,631 shares; 2025Q1: 507,831 shares; 2025Q2: 660,831 shares; 2025Q3: 583,931 shares; 2025Q4: 410,291 shares; 2026Q1: 743,791 shares 743,791$130M7.14%+333,500Timeline
IBITISHARES BITCOIN TRUST ETFQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 1,906,000 shares; 2025Q3: 6,813,612 shares; 2025Q4: 5,353,612 shares; 2026Q1: 3,044,612 shares 3,044,612$117M6.44%-2,309,000Timeline
METAMETA PLATFORMS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 1,190,381 shares; 2024Q4: 1,302,881 shares; 2025Q1: 498,381 shares; 2025Q2: 163,260 shares; 2025Q3: 163,260 shares; 2025Q4: 181,765 shares; 2026Q1: 194,554 shares 194,554$111M6.13%+12,789Timeline
ZZILLOW GROUP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 662,045 shares; 2025Q4: 662,045 shares; 2026Q1: 562,045 shares 562,045$23.3M1.28%-100,000Timeline
GENBGENERATE BIOMEDICINES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 1,111,100 shares 1,111,100$13.9M0.76%newTimeline
ZGZILLOW GROUP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 301,122 shares; 2025Q4: 301,122 shares; 2026Q1: 284,800 shares 284,800$11.8M0.65%-16,322Timeline
FLUTFLUTTER ENTMT PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 115,481 shares; 2025Q4: 115,481 shares; 2026Q1: 80,341 shares 80,341$8.19M0.45%-35,140Timeline
TXG10X GENOMICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 170,000 shares; 2024Q4: 170,000 shares; 2025Q1: 170,000 shares; 2025Q2: 170,000 shares; 2025Q3: 170,000 shares; 2025Q4: 170,000 shares; 2026Q1: 170,000 shares 170,000$3.61M0.2%0Timeline
PURECYCLE TECHNOLOGIES INCPURECYCLE TECHNOLOGIES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q2: restricted; 2024Q3: 714,285 shares; 2024Q4: 714,285 shares; 2025Q1: 714,285 shares; 2025Q2: 714,285 shares; 2025Q3: not reported; 2025Q4: 714,285 shares; 2026Q1: 714,285 shares 714,285$550K0.03%0

Sold out in Q1 2026

Positions in the previous quarter's report that this quarter's report no longer lists.

SecurityShares beforeValue beforeType
ETHAISHARES ETHEREUM TR3,870,900$86.8Mshares
KLARKLARNA GROUP PLC459,163$13.3Mshares
FIGFIGMA INC50,454$1.89Mshares

How Q1 2026 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0001193125-26-226658 base2026-05-15acceptance time not in the bulk data set