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SEC Form 13F

One William Street Capital Management, L.P. 13F Holdings

Inspect One William Street Capital Management, L.P.'s 2026-06-30 SEC 13F positions, public filing date, amendments and original receipt.

As of 2026-08-15T03:59:59.999Z

Report period
2026-06-30
Publicly available
2026-08-15
Reported value
$242,488,349
Positions
15
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Disclosed positions

Largest disclosed position values

Scale: 0 to 119,960,000 USD · zero baseline

Largest disclosed position values

  • HYG · IBOXX HI YD ETF · Put+119,955,000 USD
  • HYG · IBOXX HI YD ETF · Call+71,973,000 USD
  • BKLN · SR LN ETF+15,704,801 USD
  • TRTX · COM+8,955,900 USD
  • IWM · RUSSELL 2000 ETF · Put+8,262,375 USD
  • VCIT · INT-TERM CORP+5,926,005 USD
  • FLG · COM NEW+2,330,640 USD
  • ARI · COM+2,136,000 USD
  • STWD · COM+1,867,320 USD
  • BXMT · COM CL A+1,695,000 USD

Reported underlying-position values for 2026-06-30, publicly available 2026-08-15. Put/call values are not option premiums; this subset is not a complete portfolio allocation. Exact issuer, class and unit remain in the table. Showing the first 10 of 15 recorded values; the complete table remains available below.

Inspect all 15 displayed rows: Disclosed positions

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ISHARES TRHYGIBOXX HI YD ETF$119,955,0001,500,000SHPut
ISHARES TRHYGIBOXX HI YD ETF$71,973,000900,000SHCall
INVESCO EXCH TRADED FD TR IIBKLNSR LN ETF$15,704,801770,977SHNone
TPG RE FIN TR INCTRTXCOM$8,955,9001,070,000SHNone
ISHARES TRIWMRUSSELL 2000 ETF$8,262,37527,500SHPut
VANGUARD SCOTTSDALE FDSVCITINT-TERM CORP$5,926,00571,700SHNone
FLAGSTAR BANK NATIONAL ASSOCFLGCOM NEW$2,330,640156,000SHNone
APOLLO COML REAL ESTATE FINARICOM$2,136,000200,000SHNone
STARWOOD PPTY TR INCSTWDCOM$1,867,320114,000SHNone
BLACKSTONE MORTGAGE TRUST INBXMTCOM CL A$1,695,000100,000SHNone
KKR REAL ESTATE FIN TR INCKREFCOM$1,381,680202,000SHNone
SERVICE PPTYS TRSVCCOM SH BEN INT$1,064,700630,000SHNone
COUSINS PPTYS INCCUZCOM NEW$617,13820,585SHNone
ROCKET COS INCRKTCOM CL A$603,33538,307SHNone
NEW FORTRESS ENERGY INCNFECOM CL A$15,45542,564SHNone

Largest 50 positions by reported value; the filing may contain more positions.

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ISHARES TRHYGIBOXX HI YD ETF$119,955,0001,500,000SHPut

First displayed source row from Disclosed positions. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-06-30 and its public availability date is 2026-08-15. Subtracting those calendar dates gives 46 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

Read the amount together with its Unit and Option columns. A reported put or call position is not an option premium paid, and a quarterly holding is not a purchase made on its public filing date. Check every accession in the effective amendment lineage below: a retained holding can originate in an earlier filing rather than the latest linked amendment.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

How amendments affect these holdings

This view uses 1 effective filing version(s). A restatement replaces the previous book; a new-holdings amendment adds positions. 0 positions lack a resolved ticker and 3 positions are put or call entries.

The displayed holdings combine the effective filing versions listed here. The latest receipt linked below identifies the current projection version; it is not proof that every retained holding originated in that latest amendment. Inspect all effective accessions when verifying a position's source.

A 13F is a delayed quarterly snapshot of disclosed holdings. It is not a complete trade ledger and does not reveal every position in a manager's portfolio. Option values refer to the reported underlying position rather than a traded option premium.

Show the table · 1 row, 2 columns
Effective SEC accessionRole in this view
0001172661-26-003504Latest effective version

Quarter end and public filing date

Use the filing's public availability date when constructing a historical observation. The quarter-end report period is earlier and cannot be substituted for when the public learned the holdings.