One William Street Capital Management, L.P.: BLACKSTONE MORTGAGE TRUST IN (BXMT): Quarterly 13F Position History
As of Q2 2026, One William Street Capital Management, L.P. reported 100,000 shares of BLACKSTONE MORTGAGE TRUST IN (BXMT), worth $1.7M and representing 4.0% of its 13F equity book. The position first appeared in Q4 2018 and has been disclosed across 22 13F-HR filings in Pactolio's tracked window.
- 100,000Shares Held (Latest Filing)
- $1.7MReported Market Value (Latest Filing)
- 4.0%Portfolio Weight (% of 13F Equity Book)
- 0Quarter-over-Quarter Share Change
- -$220.0KQuarter-over-Quarter Value Change
- 100,000Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 22 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q2 2026 | 100,000 | 0 | – | $1.7M | 4.0% | $16.9 |
| Q1 2026 | 100,000 | +100,000 | – | $1.9M | 3.7% | $19.1 |
| Q4 2025 | 0 | 0 | – | $0 | 0.0% | – |
| Q3 2025 | 0 | 0 | – | $0 | 0.0% | – |
| Q2 2025 | 0 | 0 | – | $0 | 0.0% | – |
| Q1 2025 | 0 | 0 | – | $0 | 0.0% | – |
| Q4 2024 | 0 | 0 | – | $0 | 0.0% | – |
| Q3 2024 | 0 | 0 | – | $0 | 0.0% | – |
| Q1 2024 | 0 | 0 | – | $0 | 0.0% | – |
| Q4 2023 | 0 | 0 | – | $0 | 0.0% | – |
| Q3 2023 | 0 | 0 | – | $0 | 0.0% | – |
| Q2 2023 | 0 | 0 | – | $0 | 0.0% | – |
| Q1 2023 | 0 | 0 | – | $0 | 0.0% | – |
| Q4 2022 | 0 | 0 | – | $0 | 0.0% | – |
| Q3 2020 | 0 | 0 | – | $0 | 0.0% | – |
| Q2 2020 | 0 | 0 | – | $0 | 0.0% | – |
| Q1 2020 | 0 | 0 | – | $0 | 0.0% | – |
| Q4 2019 | 0 | 0 | – | $0 | 0.0% | – |
| Q3 2019 | 0 | 0 | – | $0 | 0.0% | – |
| Q2 2019 | 0 | 0 | – | $0 | 0.0% | – |
| Q1 2019 | 0 | 30,681 | -100.0% | $0 | 0.0% | – |
| Q4 2018 | 30,681 | – | – | $978.0K | 2.8% | $31.9 |
Methodology & FAQ
How This Position History Is Sourced
Each row is one SEC Form 13F-HR filing disclosing this position. Share count, market value, and reported quarter are taken verbatim from the filing; portfolio weight is recomputed against the same filing's total reported equity book. Implied price-per-share is market value divided by shares, a quarter-end mark rather than the manager's cost basis. See the full methodology document for the normalization rules.
When did One William Street Capital Management, L.P. first disclose a BXMT position in 13F-HR filings?
One William Street Capital Management, L.P. first reported BLACKSTONE MORTGAGE TRUST IN (BXMT) on its 13F-HR filing for the period ending 2018-12-31 (Q4 2018). The position has appeared on 22 reported quarters within Pactolio's tracked window.
What was One William Street Capital Management, L.P.'s most recent quarter-over-quarter share-count change in BXMT?
One William Street Capital Management, L.P. held the same 100,000 shares of BXMT between Q1 2026 and Q2 2026, so the reported share count was unchanged quarter-over-quarter.
Does the implied price-per-share represent One William Street Capital Management, L.P.'s cost basis in BXMT?
No. The implied price-per-share column is the 13F-HR reported market value divided by reported share count on the filing date (end of quarter). It is a quarter-end mark, not a cost basis or transaction price. Use it as a sanity check on the value column, not as an indicator of the manager's entry or exit price.