Ticker · CUSIP 96145W103
Holders (tracked)
7
Combined shares
1,103,039
Combined value
$4.26M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
Flat over the last 8 quarters.
SEC event timeline
13 events
- Ken Griffin (Citadel Advisors) added2026-02-17+170,399 shares · 2025Q413F
- D.E. Shaw & Co. opened position2026-02-17+20,275 shares · 2025Q413F
- Two Sigma Investments trimmed2026-02-17−500 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) added2026-02-17+356,118 shares · 2025Q413F
- T. Rowe Price added2026-02-17+39,100 shares · 2025Q413F
- AQR Capital Management trimmed2026-02-17−32,467 shares · 2025Q413F
- Renaissance Technologies trimmed2026-02-12−42,250 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) added2025-11-14+12,728 shares · 2025Q313F
- Two Sigma Investments opened position2025-11-14+15,994 shares · 2025Q313F
- AQR Capital Management added2025-11-14+29,703 shares · 2025Q313F
- T. Rowe Price added2025-11-14+1,595 shares · 2025Q313F
- Southeastern Asset (Longleaf) exited2025-11-14−2,670,176 shares · 2025Q313F
- Renaissance Technologies opened position2025-11-13+107,925 shares · 2025Q313F
Insider activity
No insider transactions in the last 30 days.
Who moved on this name in 2025Q4
13F transactions reported for the latest quarter, grouped by direction.
New positions1
- D.E. Shaw & Co.+20,275$83K
Added to3
- Izzy Englander (Millennium Mgmt)+356,118$1.4M
- Ken Griffin (Citadel Advisors)+170,399$694K
- T. Rowe Price+39,100$159
Trimmed3
- Renaissance Technologies−42,250$172K
- AQR Capital Management−32,467$132K
- Two Sigma Investments−500$2K
Exited0
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Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q3 | 5 | $83K |
| 2022Q4 | 3 | $110.7M |
| 2023Q1 | 3 | $86.3M |
| 2023Q2 | 3 | $76.9M |
| 2023Q3 | 5 | $68.1M |
| 2023Q4 | 5 | $78.6M |
| 2024Q1 | 6 | $79.4M |
| 2024Q2 | 7 | $79.9M |
| 2024Q3 | 6 | $35.3M |
| 2024Q4 | 5 | $35.3M |
| 2025Q1 | 7 | $38.9M |
| 2025Q2 | 7 | $18.5M |
| 2025Q3 | 7 | $2.9M |
| 2025Q4 | 7 | $4.3M |
Who owns WEST
7 super-investors · 2025Q4
Tracked stake
1.10M
shares
Combined value
$4M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New1Added3Trim3
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Izzy Englander Millennium Mgmt | 676.4K | $3M |
| 2 | Ken Griffin Citadel Advisors | 233.5K | $950K |
| 3 | Renaissance Technologies | 65.7K | $267K |
| 4 | AQR Capital Management | 34.5K | $140K |
| 5 | D.E. Shaw & Co. | 20.3K | $83K |
| 6 | Two Sigma Investments | 15.5K | $63K |
| 7 | T. Rowe Price | 57.2K | $233 |
Recent moves
20 transactions
- −32,467 · 2025Q4
- +356,118 · 2025Q4
- −500 · 2025Q4
- +170,399 · 2025Q4
- +39,100 · 2025Q4
- +20,275 · 2025Q4
- −42,250 · 2025Q4
- −2,670,176 · 2025Q3
- +29,703 · 2025Q3
- +12,728 · 2025Q3
- +15,994 · 2025Q3
- +1,595 · 2025Q3
- +107,925 · 2025Q3
- −61,058 · 2025Q2
- −2,209,751 · 2025Q2
- +14,326 · 2025Q2
- +22,943 · 2025Q1
- −220,838 · 2025Q1
- +3,048 · 2025Q1
- +392,214 · 2024Q4
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