William Marsh Rice University — 13F Holdings & Portfolio

CIK 1674705 · latest 13F-HR filed 2026-01-15

William Marsh Rice University manages $203.5M in 13F-reported U.S. long-equity assets across 2 reported positions as of its 2025-12-31 13F-HR filing. Its largest disclosed positions are VOO (63.01%), BSM (36.99%). Quarter over quarter (versus its 2025-09-30 filing) the fund opened 0 new positions, exited 0, added to 1, and trimmed 0.

AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.

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AUM

$203.5M

Long-equity book

Holdings

2

Distinct positions

Period

2025-12-31

Filed 2026-01-15

Q/Q Activity

+0 / −0 / ↑1 / ↓0

vs 2025-09-30

Firm Profile & Key People
Name Title / Status Ownership Type

Top Adds (vs prior quarter)

  • VANGUARD INDEX FDS$56.7M +79.2%
Show all 1

Top Trims

  • No decreased positions.
Show all 0

New Positions

  • No new positions this quarter.
Show all 0

Exited Positions

  • No exits this quarter.
Show all 0
All Holdings

Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).

# Issuer Symbol CUSIP Value Weight Shares Type
1 VANGUARD INDEX FDS VOO 922908363 $128.2M 63.01% 204,415 SH
2 BLACK STONE MINERALS L P BSM 09225M101 $75.3M 36.99% 5,663,476 SH
Filing History
Period Filed AUM Holdings Accession
2025-12-31 2026-01-15 $203.5M 2 0001062993-26-000269
2025-09-30 2025-10-31 $145.9M 2 0001062993-25-016407