Stocks/Funds/CIK 1534300

One William Street Capital Management, L.P.

microcap filerconcentrated
Quarterly 13F filings · Latest period 2026-03-31 · CIK 1534300
Assets
$52M
+2618.4% YoY
Holdings
11
Lifetime alpha vs market
-41.96% annual
Average hold time
0.7 yr
median 0.5 yr

Quarterly history

Cum return -64% vs S&P +61% · α -125% lifetimeAUM $52M · peak $433MFlow $12M (+27%)2018-122019-092020-062023-032023-122024-122025-092026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
-2.97%
trims when stocks drop
when a holding falls −10%+
Middle response
+15.24%
steady accumulation
Rally response
+0.00%
adds into rallies
when a holding rises +10%+

Top positions · 11

Ticker$ value% portYoYHold time
BKLNInvesco Senior Loan ETF$15M28.4%0.8 yr
TRTXTPG RE Finance Trust, In$8M16.1%+4.3%0.8 yr
VCITVanguard Intermediate-Te$6M11.4%1.5 yr
FLGFlagstar Financial, Inc.$5M10.1%+13.7%0.8 yr
SPYState Street SPDR S&P 50$5M9.4%+17.6%0.3 yr
CUZCousins Properties Incor$5M8.7%-21.1%0.3 yr
RKTRocket Companies, Inc.$2M4.3%+18.1%0.3 yr
ARIApollo Commercial Real E$2M4.1%+19.1%0.3 yr
STWDStarwood Property Trust,$2M3.8%-6.2%0.3 yr
BXMTBlackstone Mortgage Trus$2M3.7%+3.0%0.5 yr
NFENew Fortress Energy Inc.$0M0.0%-92.9%1.8 yr

Portfolio composition (YoY)

Industry mix
Asset Management37.8%$20M
REIT - Mortgage27.6%$14M
Asset Management - Bonds11.4%$6M
Banks - Regional10.1%$5M
REIT - Office8.7%$5M
Financial - Mortgages4.3%$2M
Regulated Gas0.0%-21.7pp$0M
Country
US100.0%+0.0pp
Top 5: 75.4% · Top 10: 100.0% · Top 25: 100.0%

Winners

TickerPrev $PnLYoY %
NFE$0M-0.00B-92.9%

Losers

TickerPrev $PnLYoY %
NFE$0M-0.00B-92.9%

Top buys this quarter · 8

BKLN Invesco Senior Loan ETF+$0M
SPY State Street SPDR S&P 500 ETF new+$5M
TRTX TPG RE Finance Trust, Inc.+$5M
CUZ Cousins Properties Incorporatenew+$4M
RKT Rocket Companies, Inc.new+$2M
ARI Apollo Commercial Real Estate new+$2M
STWD Starwood Property Trust, Inc.new+$2M
BXMT Blackstone Mortgage Trust, Inc+$1M

Top sells this quarter · 3

RSP Invesco S&P 500 Equal Weight Eexit$0M
HYG iShares iBoxx $ High Yield Corexit$0M
GSBD Goldman Sachs BDC, Inc.exit$1M

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$52M11-56.94%+17.59%-74.53%+0.01B
2025-12-31$43M6-75.01%+17.72%-92.73%+0.03B
2025-09-30$16M6-60.12%+17.52%-77.63%-0.02B
2025-06-30$33M4-60.05%+10.78%-70.82%+0.03B
2025-03-31$2M2-45.04%-4.27%-40.77%-0.00B
2024-12-31$10M2+66.34%+2.49%+63.85%+0.01B
2024-09-30$0M1-0.07B
2024-03-31$66M3+0.39%+29.62%-29.23%+0.02B
2023-12-31$48M5-11.80%+26.18%-37.98%+0.01B
2023-09-30$41M3-1.30%-3.22%+1.92%+0.02B
2023-06-30$26M4-6.42%+8.68%-15.11%-0.38B
2023-03-31$433M3-8.90%+7.46%-16.36%+0.34B
2022-12-31$105M4+0.10B
2020-09-30$4M1+0.00B
2020-06-30$4M1-0.00B
2020-03-31$4M1-0.00B