Ticker · CUSIP 861012102
Holders (tracked)
16
Combined shares
10,460,268
Combined value
$251.29M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
+4 vs previous quarter over the last 8.
SEC event timeline
15 events
- Ken Griffin (Citadel Advisors) added2026-02-17+464,305 shares · 2025Q413F
- D.E. Shaw & Co. added2026-02-17+318,200 shares · 2025Q413F
- +773,555 shares · 2025Q413F
- Two Sigma Investments added2026-02-17+1,280,302 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) trimmed2026-02-17−1,207,940 shares · 2025Q413F
- Steve Cohen (Point72) exited2026-02-17−690,773 shares · 2025Q413F
- +44,000 shares · 2025Q413F
- Jeremy Grantham (GMO) added2026-02-17+173,249 shares · 2025Q413F
- AQR Capital Management trimmed2026-02-17−108,917 shares · 2025Q413F
- −150,028 shares · 2025Q313F
- Izzy Englander (Millennium Mgmt) added2025-11-14+207,354 shares · 2025Q313F
- Steve Cohen (Point72) added2025-11-14+368,473 shares · 2025Q313F
- Two Sigma Investments added2025-11-14+1,334,192 shares · 2025Q313F
- AQR Capital Management added2025-11-14+145,513 shares · 2025Q313F
- Jeremy Grantham (GMO) trimmed2025-11-13−717,730 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 positions2
- Paul Tudor Jones (Tudor Investment)+44,000$1.1M
- Stanley Druckenmiller (Duquesne)+773,555$20K
Added to4
- Two Sigma Investments+1,280,302$33.2M
- Ken Griffin (Citadel Advisors)+464,305$12.0M
- D.E. Shaw & Co.+318,200$8.3M
- Jeremy Grantham (GMO)+173,249$4.5M
Trimmed2
- Izzy Englander (Millennium Mgmt)−1,207,940$31.3M
- AQR Capital Management−108,917$2.8M
Exited1
- Steve Cohen (Point72)−690,773$19.5M
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 11 | $276.5M |
| 2022Q2 | 11 | $228.2M |
| 2022Q3 | 15 | $389K |
| 2022Q4 | 16 | $349.8M |
| 2023Q1 | 15 | $592.3M |
| 2023Q2 | 15 | $560.4M |
| 2023Q3 | 17 | $552.0M |
| 2023Q4 | 10 | $483.5M |
| 2024Q1 | 13 | $462.6M |
| 2024Q2 | 13 | $542.4M |
| 2024Q3 | 15 | $426.8M |
| 2024Q4 | 17 | $411.8M |
| 2025Q1 | 15 | $299.3M |
| 2025Q2 | 15 | $202.6M |
| 2025Q3 | 12 | $251.9M |
| 2025Q4 | 16 | $251.3M |
Who owns STM
16 super-investors · 2025Q4
Tracked stake
10.46M
shares
Combined value
$251M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New3Added7Trim4Sold2
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Two Sigma Investments | 3.60M | $93M |
| 2 | Ken Griffin Citadel Advisors | 1.50M | $39M |
| 3 | Jeremy Grantham GMO | 1.02M | $26M |
| 4 | Ken Griffin Citadel Advisors | 779.1K | $20M |
| 5 | Izzy Englander Millennium Mgmt | 734.6K | $19M |
| 6 | Izzy Englander Millennium Mgmt | 724.9K | $19M |
| 7 | Izzy Englander Millennium Mgmt | 384.0K | $10M |
| 8 | D.E. Shaw & Co. | 289.3K | $8M |
| 9 | D.E. Shaw & Co. | 269.7K | $7M |
| 10 | Ken Griffin Citadel Advisors | 202.0K | $5M |
| 11 | Steve Cohen Point72 | 62.5K | $2M |
| 12 | AQR Capital Management | 61.6K | $2M |
| 13 | Paul Tudor Jones Tudor Investment | 25.9K | $672K |
| 14 | Paul Tudor Jones Tudor Investment | 18.1K | $470K |
| 15 | Steve Cohen Point72 | 16.8K | $436K |
| 16 | Stanley Druckenmiller Duquesne | 773.6K | $20K |
Recent moves
20 transactions
- −1,207,940 · 2025Q4
- −690,773 · 2025Q4
- +773,555 · 2025Q4
- +44,000 · 2025Q4
- +1,280,302 · 2025Q4
- +318,200 · 2025Q4
- −108,917 · 2025Q4
- +173,249 · 2025Q4
- +464,305 · 2025Q4
- −150,028 · 2025Q3
- +368,473 · 2025Q3
- +207,354 · 2025Q3
- +145,513 · 2025Q3
- +1,334,192 · 2025Q3
- −717,730 · 2025Q3
- +322,300 · 2025Q2
- −2,940,238 · 2025Q2
- +455,983 · 2025Q2
- SOLDD.E. Shaw & Co.−220,299 · 2025Q2
- −425,981 · 2025Q2
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