Vanguard
· Reduced
−$1.5B
Change
−12.7M
Date
Q1 2026
GL
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Vanguard
· Reduced
−$1.5B
Change
−12.7M
Date
Q1 2026
|
Vanguard | Reduced· Q1 2026 | −$1.5B | −12.7M | – | Q1 2026 | |||||
|
Norges
· Exited
−$1.3B
Change
−10.5M
Δ Own
−100.0%
Date
Q1 2026
|
Norges | Exited· Q1 2026 | −$1.3B | −10.5M | −100.0% | Q1 2026 | |||||
|
FMR LLC
· Added
+$1.3B
Change
+10.5M
Δ Own
+72.4%
Date
Q1 2026
|
FMR LLC | Added· Q1 2026 | +$1.3B | +10.5M | +72.4% | Q1 2026 | |||||
|
Capital Research Global Investors
· Added
+$597M
Change
+5.0M
Δ Own
+29.3%
Date
Q1 2026
|
Capital Research Global Investors | Added· Q1 2026 | +$597M | +5.0M | +29.3% | Q1 2026 | |||||
|
Wellington Management Group LLP
· Reduced
−$463M
Change
−3.8M
Δ Own
−30.6%
Date
Q1 2026
|
Wellington Management Group LLP | Reduced· Q1 2026 | −$463M | −3.8M | −30.6% | Q1 2026 | |||||
|
Lone Pine Capital LLC
· New
+$448M
Change
+3.7M
Date
Q1 2026
|
Lone Pine Capital LLC | New· Q1 2026 | +$448M | +3.7M | – | Q1 2026 | |||||
|
BlackRock
· Added
+$377M
Change
+3.1M
Date
Q1 2026
|
BlackRock | Added· Q1 2026 | +$377M | +3.1M | – | Q1 2026 | |||||
|
Ameriprise Financial Inc
· Reduced
−$364M
Change
−3.0M
Date
Q1 2026
|
Ameriprise Financial Inc | Reduced· Q1 2026 | −$364M | −3.0M | – | Q1 2026 | |||||
|
Anther Capital Ltd
· New
+$362M
Change
+3.0M
Date
Q1 2026
|
Anther Capital Ltd | New· Q1 2026 | +$362M | +3.0M | – | Q1 2026 | |||||
|
Deutsche Bank AG
· Added
+$354M
Change
+2.9M
Date
Q1 2026
|
Deutsche Bank AG | Added· Q1 2026 | +$354M | +2.9M | – | Q1 2026 | |||||
|
Bank of America Corp
· Reduced
−$347M
Change
−2.9M
Date
Q1 2026
|
Bank of America Corp | Reduced· Q1 2026 | −$347M | −2.9M | – | Q1 2026 | |||||
|
Aspex Management (hk) Ltd
· New
+$307M
Change
+2.5M
Date
Q1 2026
|
Aspex Management (hk) Ltd | New· Q1 2026 | +$307M | +2.5M | – | Q1 2026 | |||||
|
Arrowstreet Capital, Limited Partnership
· Reduced
−$289M
Change
−2.4M
Date
Q1 2026
|
Arrowstreet Capital, Limited Partnership | Reduced· Q1 2026 | −$289M | −2.4M | – | Q1 2026 | |||||
|
Los Angeles Capital Management LLC
· Reduced
−$287M
Change
−2.4M
Date
Q1 2026
|
Los Angeles Capital Management LLC | Reduced· Q1 2026 | −$287M | −2.4M | – | Q1 2026 | |||||
|
Goldman Sachs Group Inc
· Added
+$258M
Change
+2.1M
Date
Q1 2026
|
Goldman Sachs Group Inc | Added· Q1 2026 | +$258M | +2.1M | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Martin Kevin J.
· Director
Grant (A)
$35K
|
Martin Kevin J. | Director | Grant (A) | $255.43 | 137 | $35K | 20K | – | Jun 30, 2026 | Jul 1, 2026 | |||||||||
|
Ferguson Roger W. Jr
· Director
Grant (A)
$41K
|
Ferguson Roger W. Jr | Director | Grant (A) | $255.43 | 161 | $41K | 17K | – | Jun 30, 2026 | Jul 1, 2026 | |||||||||
|
Cummings Robert F. Jr
· Director
Grant (A)
$41K
|
Cummings Robert F. Jr | Director | Grant (A) | $255.43 | 161 | $41K | 131K | – | Jun 30, 2026 | Jul 1, 2026 | |||||||||
|
Burns Stephanie
· Director
Grant (A)
$41K
|
Burns Stephanie | Director | Grant (A) | $255.43 | 161 | $41K | 27K | – | Jun 30, 2026 | Jul 1, 2026 | |||||||||
|
Gullo Michelle L.
· Officer
Tax withholding or exercise payment (F)
-$3.9M
|
Gullo Michelle L. | Officer | Tax withholding or exercise payment (F) | $209.83 | -18K | -$3.9M | 19K | −48.8% | Jun 22, 2026 | Jun 23, 2026 | |||||||||
|
Weeks Wendell P.
· Director
Sell
−$19M
|
Weeks Wendell P. | Director | Sell | $186.46 | −100K | −$19M | 908K | – | Jun 9, 2026 | Jun 9, 2026 | |||||||||
|
Weeks Wendell P.
· Director
2 operations
0
|
Weeks Wendell P. | Director | 2 operations | $27.03 | 0 | – | 50K | – | Jun 9, 2026 | Jun 9, 2026 | |||||||||
|
Amin Jaymin
· Officer
Sell
−$5.3M
|
Amin Jaymin | Officer | Sell | $192.14 | −27K | −$5.3M | 94K | – | May 22, 2026 | May 26, 2026 | |||||||||
|
Amin Jaymin
· Officer
2 operations
0
|
Amin Jaymin | Officer | 2 operations | $27.00 | 0 | – | 0 | – | May 22, 2026 | May 26, 2026 | |||||||||
|
Nelson Avery H. III
· Officer
Sell
−$3.9M
|
Nelson Avery H. III | Officer | Sell | $195.93 | −20K | −$3.9M | 70K | – | May 15, 2026 | May 18, 2026 | |||||||||
|
Fang Li
· Officer
2 operations
0
|
Fang Li | Officer | 2 operations | $19.65 | 0 | – | 0 | – | May 14, 2026 | May 15, 2026 | |||||||||
|
Verkleeren Ronald L.
· Officer
Sell
−$2.1M
|
Verkleeren Ronald L. | Officer | Sell | $207.77 | −10K | −$2.1M | 48K | – | May 13, 2026 | May 14, 2026 | |||||||||
|
Becker Stefan
· Officer
Gift (G)
-126
|
Becker Stefan | Officer | Gift (G) | – | -126 | – | 7K | – | May 13, 2026 | May 14, 2026 | |||||||||
|
Tillman Michaune D.
· Officer
Sell
−$675K
|
Tillman Michaune D. | Officer | Sell | $207.02 | −3K | −$675K | 10K | – | May 11, 2026 | May 12, 2026 | |||||||||
|
Seetharam Soumya
· Officer
Sell
−$4.1M
|
Seetharam Soumya | Officer | Sell | $206.23 | −20K | −$4.1M | 26K | – | May 11, 2026 | May 12, 2026 | |||||||||
N
A
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2,078 reporting institutions disclosed GLW 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.