Stocks/Funds/CIK 1674705

William Marsh Rice University

long-term holderconcentrated
Quarterly 13F filings · Latest period 2026-03-31 · CIK 1674705
Assets
$221M
-6.9% YoY
Holdings
2
Lifetime alpha vs market
-15.28% annual
Average hold time
5.5 yr
median 5.5 yr

Quarterly history

Cum return -22% vs S&P +52% · α -74% lifetimeAUM $221M · peak $241MFlow $-15M (-8%)2016-122018-062019-122021-062022-122024-062025-122026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
-0.16%
trims when stocks drop
when a holding falls −10%+
Middle response
-3.38%
baseline attrition
Rally response
-8.14%
trims into rallies
when a holding rises +10%+

Top positions · 2

Ticker$ value% portYoYHold time
VOOVanguard S&P 500 ETF$135M61.2%1.5 yr
BSMBlack Stone Minerals, L.$86M38.8%+8.9%9.5 yr

Portfolio composition (YoY)

Industry mix
Asset Management61.2%-2.2pp$135M
Oil & Gas Exploration & Production38.8%+2.3pp$86M
Country
US100.0%+0.0pp
Top 5: 100.0% · Top 10: 100.0% · Top 25: 100.0%

Winners

TickerPrev $PnLYoY %
BSM$86M+0.01B8.9%

Losers

TickerPrev $PnLYoY %

Top buys this quarter · 1

VOO Vanguard S&P 500 ETF+$0M

Top sells this quarter · 0

No sells this quarter

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$221M2+8.92%+17.59%-8.68%-0.02B
2025-12-31$203M2+0.60%+17.72%-17.12%+0.05B
2025-09-30$146M2-3.71%+17.52%-21.22%+0.00B
2025-06-30$140M2-7.31%+14.94%-22.25%-0.07B
2025-03-31$237M3+5.36%+8.30%-2.94%+0.01B
2024-12-31$215M3+0.87%+24.89%-24.02%+0.13B
2024-09-30$86M2-2.60%+36.04%-38.64%-0.00B
2024-06-30$89M2-8.64%+24.49%-33.13%-0.00B
2024-03-31$91M1-15.39%+29.62%-45.01%-0.02B
2023-12-31$109M4-18.89%+26.18%-45.07%-0.01B
2023-09-30$127M5-1.77%+21.57%-23.33%-0.01B
2023-06-30$147M5+6.88%+19.42%-12.55%+0.01B
2023-03-31$150M8-19.25%-7.82%-11.43%-0.04B
2022-12-31$190M7+15.85%+7.56%+8.29%+0.01B
2022-09-30$153M7+1.05%-4.93%+5.98%+0.02B
2022-06-30$133M8-29.87%-16.11%-13.76%+0.00B