Ticker · CUSIP 852312305
Holders (tracked)
9
Combined shares
954,131
Combined value
$22.03M
Last close
$25.08
Quarter
2025Q4
Price · 1Y$25.08+8.19 (+48.49%)H $28.57 · L $16.10 · Avg Vol 1.3M
Tracked holders · last 8 quarters
-1 vs previous quarter over the last 8.
Price is +8.6% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
16 events
- AQR Capital Management added2026-02-17+174 shares · 2025Q4Position
- +45,600 shares · 2025Q4Position
- D.E. Shaw & Co. trimmed2026-02-17−295 shares · 2025Q4Position
- Ken Griffin (Citadel Advisors) added2026-02-17+61,701 shares · 2025Q4Position
- Izzy Englander (Millennium Mgmt) added2026-02-17+334,272 shares · 2025Q4Position
- T. Rowe Price added2026-02-17+1,234 shares · 2025Q4Position
- Renaissance Technologies opened position2026-02-12+37,800 shares · 2025Q4Position
- Mario Gabelli (GAMCO) added2026-02-05+4,000 shares · 2025Q4Position
- AQR Capital Management opened position2025-11-14+15,118 shares · 2025Q3Position
- Izzy Englander (Millennium Mgmt) added2025-11-14+7,411 shares · 2025Q3Position
- Two Sigma Investments trimmed2025-11-14−293,524 shares · 2025Q3Position
- D.E. Shaw & Co. trimmed2025-11-14−106,355 shares · 2025Q3Position
- T. Rowe Price added2025-11-14+6,770 shares · 2025Q3Position
- Renaissance Technologies exited2025-11-13−31,900 shares · 2025Q3Position
- Mario Gabelli (GAMCO) opened position2025-11-12+11,000 shares · 2025Q3Position
- Norges Bank (Norway SWF) opened position2025-11-12+272,445 shares · 2024Q3Position
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of STAA…
Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.
| Investor | First in | Cost basis | Return | Position value today |
|---|---|---|---|---|
| D.E. Shaw & Co. | 2016Q1 | $18.69 | +34.2% | $442K |
| Two Sigma Investments | 2016Q1 | $19.52 | +28.5% | $2.9M |
| Ken Griffin (Citadel Advisors) | 2016Q3 | $23.60 | +6.3% | $5.1M |
| Paul Tudor Jones (Tudor Investment) | 2018Q2 | $24.45 | +2.6% | $1.1M |
| Izzy Englander (Millennium Mgmt) | 2017Q2 | $25.59 | -2.0% | $11.3M |
| Mario Gabelli (GAMCO) | 2025Q3 | $25.86 | -3.0% | $376K |
| Renaissance Technologies | 2016Q1 | $38.31 | -34.5% | $948K |
| AQR Capital Management | 2018Q2 | $40.37 | -37.9% | $384K |
| T. Rowe Price | 2020Q2 | $51.57 | -51.4% | $1.3M |
Who moved on this name in 2025Q4
Position changes reported for the latest quarter, grouped by direction.
New positions2
- Paul Tudor Jones (Tudor Investment)+45,600$1.1M
- Renaissance Technologies+37,800$873K
Added to5
- Izzy Englander (Millennium Mgmt)+334,272$7.7M
- Ken Griffin (Citadel Advisors)+61,701$1.4M
- Mario Gabelli (GAMCO)+4,000$92K
- AQR Capital Management+174$4K
- T. Rowe Price+1,234$29
Trimmed1
- D.E. Shaw & Co.−295$7K
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 15 | $33.48B |
| 2022Q2 | 16 | $31.28B |
| 2022Q3 | 16 | $829.4M |
| 2022Q4 | 18 | $596.3M |
| 2023Q1 | 16 | $772.8M |
| 2023Q2 | 17 | $716.9M |
| 2023Q3 | 15 | $597.1M |
| 2023Q4 | 11 | $450.1M |
| 2024Q1 | 10 | $477.1M |
| 2024Q2 | 12 | $565.5M |
| 2024Q3 | 13 | $161.0M |
| 2024Q4 | 12 | $65.8M |
| 2025Q1 | 10 | $15.7M |
| 2025Q2 | 8 | $23.2M |
| 2025Q3 | 10 | $16.3M |
| 2025Q4 | 9 | $22.0M |
Who owns STAA
9 super-investors · 2025Q4
Tracked stake
954.1K
shares
Combined value
$22M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New2Added5Trim1Held1
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Izzy Englander Millennium Mgmt | 451.3K | $10M |
| 2 | Ken Griffin Citadel Advisors | 205.1K | $5M |
| 3 | Two Sigma Investments | 113.9K | $3M |
| 4 | T. Rowe Price | 52.5K | $1M |
| 5 | Paul Tudor Jones Tudor Investment | 45.6K | $1M |
| 6 | Renaissance Technologies | 37.8K | $873K |
| 7 | D.E. Shaw & Co. | 17.6K | $407K |
| 8 | AQR Capital Management | 15.3K | $353K |
| 9 | Mario Gabelli GAMCO | 15.0K | $346K |
Recent moves
20 transactions
- +45,600 · 2025Q4
- +61,701 · 2025Q4
- +334,272 · 2025Q4
- +1,234 · 2025Q4
- TRIMD.E. Shaw & Co.−295 · 2025Q4
- +174 · 2025Q4
- +37,800 · 2025Q4
- +4,000 · 2025Q4
- TRIMD.E. Shaw & Co.−106,355 · 2025Q3
- +7,411 · 2025Q3
- −293,524 · 2025Q3
- +6,770 · 2025Q3
- +15,118 · 2025Q3
- −31,900 · 2025Q3
- +272,445 · 2024Q3
- +11,000 · 2025Q3
- +83,509 · 2025Q2
- +318,977 · 2025Q2
- +2,804 · 2025Q2
- −66,369 · 2025Q2
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