Norges
· Exited
−$614M
Change
−10.2M
Δ Own
−100.0%
Date
Q1 2026
BX
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Norges
· Exited
−$614M
Change
−10.2M
Δ Own
−100.0%
Date
Q1 2026
|
Norges | Exited· Q1 2026 | −$614M | −10.2M | −100.0% | Q1 2026 | |||||
|
First Eagle Investment Management, LLC
· Added
+$357M
Change
+5.9M
Δ Own
+174.0%
Date
Q1 2026
|
First Eagle Investment Management, LLC | Added· Q1 2026 | +$357M | +5.9M | +174.0% | Q1 2026 | |||||
|
Cohen & Steers, Inc.
· Added
+$329M
Change
+5.5M
Date
Q1 2026
|
Cohen & Steers, Inc. | Added· Q1 2026 | +$329M | +5.5M | – | Q1 2026 | |||||
|
Boston Partners
· Reduced
−$207M
Change
−3.4M
Date
Q1 2026
|
Boston Partners | Reduced· Q1 2026 | −$207M | −3.4M | – | Q1 2026 | |||||
|
Citadel Advisors LLC
· Added
+$139M
Change
+2.3M
Δ Own
+132.2%
Date
Q1 2026
|
Citadel Advisors LLC | Added· Q1 2026 | +$139M | +2.3M | +132.2% | Q1 2026 | |||||
|
Invesco Ltd.
· Added
+$130M
Change
+2.2M
Δ Own
+52.6%
Date
Q1 2026
|
Invesco Ltd. | Added· Q1 2026 | +$130M | +2.2M | +52.6% | Q1 2026 | |||||
|
Allspring Global Investments Holdings, LLC
· Reduced
−$124M
Change
−2.1M
Date
Q1 2026
|
Allspring Global Investments Holdings, LLC | Reduced· Q1 2026 | −$124M | −2.1M | – | Q1 2026 | |||||
|
BlackRock
· Reduced
−$112M
Change
−1.9M
Date
Q1 2026
|
BlackRock | Reduced· Q1 2026 | −$112M | −1.9M | – | Q1 2026 | |||||
|
Centersquare Investment Management LLC
· Reduced
−$104M
Change
−1.7M
Date
Q1 2026
|
Centersquare Investment Management LLC | Reduced· Q1 2026 | −$104M | −1.7M | – | Q1 2026 | |||||
|
Voya Investment Management LLC
· Reduced
−$87M
Change
−1.5M
Date
Q1 2026
|
Voya Investment Management LLC | Reduced· Q1 2026 | −$87M | −1.5M | – | Q1 2026 | |||||
|
State Street
· Reduced
−$83M
Change
−1.4M
Date
Q1 2026
|
State Street | Reduced· Q1 2026 | −$83M | −1.4M | – | Q1 2026 | |||||
|
Daiwa Securities Group Inc.
· Added
+$75M
Change
+1.3M
Date
Q1 2026
|
Daiwa Securities Group Inc. | Added· Q1 2026 | +$75M | +1.3M | – | Q1 2026 | |||||
|
Prudential Financial Inc
· Added
+$68M
Change
+1.1M
Date
Q1 2026
|
Prudential Financial Inc | Added· Q1 2026 | +$68M | +1.1M | – | Q1 2026 | |||||
|
Northern Trust
· Reduced
−$55M
Change
−910K
Date
Q1 2026
|
Northern Trust | Reduced· Q1 2026 | −$55M | −910K | – | Q1 2026 | |||||
|
Morgan Stanley
· Reduced
−$51M
Change
−841K
Date
Q1 2026
|
Morgan Stanley | Reduced· Q1 2026 | −$51M | −841K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Lustig Matthew J.
· Director
Grant (A)
$29K
|
Lustig Matthew J. | Director | Grant (A) | $66.31 | 440 | $29K | 22K | – | Jun 30, 2026 | Jul 1, 2026 | |||||||||
|
Kipp Mary E.
· Director
Grant (A)
$27K
|
Kipp Mary E. | Director | Grant (A) | $66.31 | 402 | $27K | 8K | – | Jun 30, 2026 | Jul 1, 2026 | |||||||||
|
Klein Joel
· Director
Grant (A)
$33K
|
Klein Joel | Director | Grant (A) | $66.31 | 496 | $33K | 24K | – | Jun 30, 2026 | Jul 1, 2026 | |||||||||
|
Richardson Julie
· Director
Grant (A)
$24K
|
Richardson Julie | Director | Grant (A) | $66.31 | 364 | $24K | 2K | – | Jun 30, 2026 | Jul 1, 2026 | |||||||||
|
West Tony
· Director
Grant (A)
$23K
|
West Tony | Director | Grant (A) | $66.31 | 352 | $23K | 5K | – | Jun 30, 2026 | Jul 1, 2026 | |||||||||
|
Walton William H. III
· Director
Grant (A)
$23K
|
Walton William H. III | Director | Grant (A) | $66.31 | 346 | $23K | 10K | – | Jun 30, 2026 | Jul 1, 2026 | |||||||||
|
Duncan Bruce W.
· Director
Grant (A)
$34K
|
Duncan Bruce W. | Director | Grant (A) | $66.31 | 515 | $34K | 14K | – | Jun 30, 2026 | Jul 1, 2026 | |||||||||
|
Labelle Michael E.
· Officer
2 operations
−$1.7M
|
Labelle Michael E. | Officer | 2 operations | $66.05–$67.02 | −26K | −$1.7M | 6K | – | Jun 9, 2026 | Jun 10, 2026 | |||||||||
|
Labelle Michael E.
· Officer
4 operations
0
|
Labelle Michael E. | Officer | 4 operations | $0.25 | 0 | – | 0 | – | Jun 4, 2026 | Jun 4, 2026 | |||||||||
|
Kipp Mary E.
· Director
Grant (A)
$833
|
Kipp Mary E. | Director | Grant (A) | $0.25 | 3K | $833 | 13K | – | May 29, 2026 | Jun 2, 2026 | |||||||||
|
Walton William H. III
· Director
Grant (A)
$833
|
Walton William H. III | Director | Grant (A) | $0.25 | 3K | $833 | 18K | – | May 29, 2026 | Jun 2, 2026 | |||||||||
|
Klein Joel
· Director
Grant (A)
$833
|
Klein Joel | Director | Grant (A) | $0.25 | 3K | $833 | 23K | – | May 29, 2026 | Jun 2, 2026 | |||||||||
|
Naughton Timothy J.
· Director
Grant (A)
3K
|
Naughton Timothy J. | Director | Grant (A) | – | 3K | – | 9K | – | May 29, 2026 | Jun 2, 2026 | |||||||||
|
Duncan Bruce W.
· Director
Grant (A)
$833
|
Duncan Bruce W. | Director | Grant (A) | $0.25 | 3K | $833 | 21K | – | May 29, 2026 | Jun 2, 2026 | |||||||||
|
West Tony
· Director
2 operations
3K
|
West Tony | Director | 2 operations | $0.25 | 3K | – | 4K | – | May 29, 2026 | Jun 2, 2026 | |||||||||
N
A
M
G
A
A
595 reporting institutions disclosed BXP position changes in the Q1 2026 snapshot.
For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.
An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.
Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.
Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.
A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.