William Marsh Rice University

In its 13F for Q4 2025 (holdings as of December 31, 2025, filed January 15, 2026), William Marsh Rice University reported 2 stock positions worth $203.5 million. Its top holding was Vanguard S&P 500 ETF (VOO) at 63.0% of the portfolio, followed by Black Stone Minerals (BSM, 37.0%). Compared with Q3 2025, it added to 1. The biggest buy was Vanguard S&P 500 ETF (VOO, shares +75%).

Most Recent 13F
Q2 2026
Location
HOUSTON, TX
CIK
0001674705
Portfolio Value
$203.5M (Q4 2025)
SEC Filing
0001062993-26-000269 ↗ filed Jan 15, 2026

Holdings Value

0$50.0M$100.0M$150.0M$200.0M$250.0M Q1 2024: $90.5M Q1 2024 Q2 2024: $89.3M Q2 2024 Q3 2024: $85.8M Q3 2024 Q4 2024: $215.1M Q4 2024 Q1 2025: $236.9M Q1 2025 Q2 2025: $140.4M Q2 2025 Q3 2025: $145.9M Q3 2025 Q4 2025: $203.5M $203.5M Q4 2025 Q1 2026: $220.6M Q1 2026 Q2 2026: $219.2M Q2 2026

Holdings 2 stocks · $203.5M
VOO Vanguard S&P 500 ETF 63.01% 204,415 $128.2M Add +75.0%
BSM Black Stone Minerals LP 36.99% 5,663,476 $75.3M No change

Portfolio Sells Q3 2025 → Q4 2025
None this quarter.

Portfolio Buys Q3 2025 → Q4 2025
VOO Vanguard S&P 500 ETF Add +75.0% 63.01% +14.00

All Filings

QuarterPositions13F Reported ValueTop Holdings
Q2 2026 2$219.2MVOO, BSM
Q1 2026 2$220.6MVOO, BSM
Q4 2025 2$203.5MVOO, BSM
Q3 2025 2$145.9MBSM, VOO
Q2 2025 2$140.4MBSM, VOO
Q1 2025 3$236.9MVOO, BSM, AMPL
Q4 2024Amended 3$215.1MVOO, BSM, NU
Q3 2024 2$85.8MBSM, KVYO
Q2 2024 2$89.3MBSM, VERA
Q1 2024 1$90.5MBSM