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BXMT · Blackstone Mortgage Trust, Inc.

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Market Cap
$2.31B
Shares
168.54M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 349
Total Value: $1,897,556,946
Total Shares: 112,371,269
Showing 1–100 of 355 holdings by value · page 1 of 4

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 349 13F filers · Δ vs Mar 31, 2026
Top Holder
22.3%
Sep 2023 → Jun 2026 · range 21.9% – 25.3%
+0.2 pts
Top 5
50.7%
Sep 2023 → Jun 2026 · range 50.5% – 57.2%
+0.2 pts
Top 10
65.1%
Sep 2023 → Jun 2026 · range 62.3% – 68.0%
+2.7 pts
HHI
772
Sep 2023 → Jun 2026 · range 751 – 1,023
Broadly held+20

Quarterly Activity

vs Mar 31, 2026
New
48
Increased
135
Decreased
98
Sold Out
40
Unchanged
68
Holder count: +8
Institutional value: -10.5%
Shares held: +1.5%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 355
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1061630 CUSIP 09257W100 13F (30d) 255 filings 250 filers Visit website Investor relations