Contour Asset Management LLC
· Reduced
−$113M
Change
−6.1M
Date
Q1 2026
ZE
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Contour Asset Management LLC
· Reduced
−$113M
Change
−6.1M
Date
Q1 2026
|
Contour Asset Management LLC | Reduced· Q1 2026 | −$113M | −6.1M | – | Q1 2026 | |||||
|
UBS Group AG
· Added
+$64M
Change
+3.4M
Date
Q1 2026
|
UBS Group AG | Added· Q1 2026 | +$64M | +3.4M | – | Q1 2026 | |||||
|
Greenvale Capital LLP
· Added
+$63M
Change
+3.4M
Date
Q1 2026
|
Greenvale Capital LLP | Added· Q1 2026 | +$63M | +3.4M | – | Q1 2026 | |||||
|
Jane Street Group, LLC
· Added
+$62M
Change
+3.3M
Date
Q1 2026
|
Jane Street Group, LLC | Added· Q1 2026 | +$62M | +3.3M | – | Q1 2026 | |||||
|
Capital World Investors
· Added
+$56M
Change
+3.0M
Date
Q1 2026
|
Capital World Investors | Added· Q1 2026 | +$56M | +3.0M | – | Q1 2026 | |||||
|
Norges
· Exited
−$43M
Change
−2.3M
Δ Own
−100.0%
Date
Q1 2026
|
Norges | Exited· Q1 2026 | −$43M | −2.3M | −100.0% | Q1 2026 | |||||
|
Annex Advisory Services, LLC
· Reduced
−$35M
Change
−1.9M
Date
Q1 2026
|
Annex Advisory Services, LLC | Reduced· Q1 2026 | −$35M | −1.9M | – | Q1 2026 | |||||
|
Granahan Investment Management, LLC
· Reduced
−$30M
Change
−1.6M
Date
Q1 2026
|
Granahan Investment Management, LLC | Reduced· Q1 2026 | −$30M | −1.6M | – | Q1 2026 | |||||
|
FMR LLC
· Reduced
−$30M
Change
−1.6M
Δ Own
−89.4%
Date
Q1 2026
|
FMR LLC | Reduced· Q1 2026 | −$30M | −1.6M | −89.4% | Q1 2026 | |||||
|
UBS AM
· Reduced
−$29M
Change
−1.6M
Date
Q1 2026
|
UBS AM | Reduced· Q1 2026 | −$29M | −1.6M | – | Q1 2026 | |||||
|
Bwcp, LP
· Added
+$25M
Change
+1.3M
Date
Q1 2026
|
Bwcp, LP | Added· Q1 2026 | +$25M | +1.3M | – | Q1 2026 | |||||
|
Bank of America Corp
· Added
+$23M
Change
+1.2M
Date
Q1 2026
|
Bank of America Corp | Added· Q1 2026 | +$23M | +1.2M | – | Q1 2026 | |||||
|
Dimensional
· Added
+$23M
Change
+1.2M
Date
Q1 2026
|
Dimensional | Added· Q1 2026 | +$23M | +1.2M | – | Q1 2026 | |||||
|
BlackRock
· Added
+$22M
Change
+1.2M
Date
Q1 2026
|
BlackRock | Added· Q1 2026 | +$22M | +1.2M | – | Q1 2026 | |||||
|
AQR Capital Management LLC
· Added
+$17M
Change
+891K
Date
Q1 2026
|
AQR Capital Management LLC | Added· Q1 2026 | +$17M | +891K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Niehaus Robert H.
· Director
Grant (A)
7K
|
Niehaus Robert H. | Director | Grant (A) | – | 7K | – | 612K | +1.2% | Jul 1, 2026 | Jul 2, 2026 | |||||||||
|
Silberblatt Jeanine
· Director
Grant (A)
7K
|
Silberblatt Jeanine | Director | Grant (A) | – | 7K | – | 58K | +14.3% | Jul 1, 2026 | Jul 2, 2026 | |||||||||
|
Landman William
· Director
2 operations
8K
|
Landman William | Director | 2 operations | $19.68 | 8K | – | 272K | +3.2% | Jul 1, 2026 | Jul 2, 2026 | |||||||||
|
Royan William T.
· Director
Grant (A)
7K
|
Royan William T. | Director | Grant (A) | – | 7K | – | 83K | +9.5% | Jul 1, 2026 | Jul 2, 2026 | |||||||||
|
Elzie Jene
· Director
Grant (A)
7K
|
Elzie Jene | Director | Grant (A) | – | 7K | – | 70K | +11.5% | Jul 1, 2026 | Jul 2, 2026 | |||||||||
|
Silberblatt Jeanine
· Director
Sell
−$149K
|
Silberblatt Jeanine | Director | Sell | $19.89 | −8K | −$149K | 50K | – | Jun 12, 2026 | Jun 12, 2026 | |||||||||
|
Ravella Satish
· Officer
Gift (G)
-8K
|
Ravella Satish | Officer | Gift (G) | – | -8K | – | 181K | – | Jun 4, 2026 | Jun 4, 2026 | |||||||||
|
Ravella Satish
· Officer
2 operations
0
|
Ravella Satish | Officer | 2 operations | $12.56 | 0 | – | 75K | – | Jun 2, 2026 | Jun 4, 2026 | |||||||||
|
Ravella Satish
· Officer
Tax withholding or exercise payment (F)
-$437K
|
Ravella Satish | Officer | Tax withholding or exercise payment (F) | $25.25 | -17K | -$437K | 189K | – | Jun 2, 2026 | Jun 4, 2026 | |||||||||
|
Gerber Steven H.
· Officer
Gift (G)
-724K
|
Gerber Steven H. | Officer | Gift (G) | – | -724K | – | 154K | – | May 20, 2026 | May 22, 2026 | |||||||||
|
Greiner Christopher E.
· CFO
Gift (G)
-633K
|
Greiner Christopher E. | CFO | Gift (G) | – | -633K | – | 144K | – | May 20, 2026 | May 22, 2026 | |||||||||
|
Niehaus Robert H.
· Director
2 operations
0
|
Niehaus Robert H. | Director | 2 operations | – | 0 | – | 60K | – | May 7, 2026 | May 12, 2026 | |||||||||
|
Steinberg David
· Director
4 operations
-1.3M
|
Steinberg David | Director | 4 operations | – | -1.3M | – | 67K | – | May 6, 2026 | May 8, 2026 | |||||||||
|
Landman William
· Director
Grant (A)
$25K
|
Landman William | Director | Grant (A) | $15.92 | 2K | $25K | 264K | – | Apr 1, 2026 | Apr 3, 2026 | |||||||||
|
Elzie Jene
· Director
Shares transferred outside the market (D), often for tax or as a gift, not a market sale
-$75K
|
Elzie Jene | Director | Shares transferred outside the market (D), often for tax or as a gift, not a market sale | $18.24 | -4K | -$75K | 62K | – | Mar 11, 2026 | Mar 13, 2026 | |||||||||
N
A
M
G
A
A
396 reporting institutions disclosed ZETA 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.