Ticker · CUSIP 85914M107
Holders (tracked)
8
Combined shares
18,493,809
Combined value
$859.64M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
Flat over the last 8 quarters.
SEC event timeline
16 events
- Izzy Englander (Millennium Mgmt) added2026-02-17+561,176 shares · 2025Q413F
- T. Rowe Price added2026-02-17+724,201 shares · 2025Q413F
- Ken Griffin (Citadel Advisors) added2026-02-17+89,738 shares · 2025Q413F
- Wellington Management added2026-02-17+504,680 shares · 2025Q413F
- Ron Baron (Baron Capital / BAMCO) added2026-02-17+132,267 shares · 2025Q413F
- Jeremy Grantham (GMO) trimmed2026-02-17−246,028 shares · 2025Q413F
- AQR Capital Management added2026-02-17+1,707 shares · 2025Q413F
- AQR Capital Management added2025-11-14+2,658 shares · 2025Q313F
- Izzy Englander (Millennium Mgmt) trimmed2025-11-14−502,952 shares · 2025Q313F
- Steve Cohen (Point72) exited2025-11-14−12,000 shares · 2025Q313F
- T. Rowe Price trimmed2025-11-14−1,679,513 shares · 2025Q313F
- Wellington Management added2025-11-14+2,257,880 shares · 2025Q313F
- Ron Baron (Baron Capital / BAMCO) added2025-11-14+457,775 shares · 2025Q313F
- Jeremy Grantham (GMO) added2025-11-13+5,604 shares · 2025Q313F
- Norges Bank (Norway SWF) exited2025-11-13−13,656 shares · 2025Q313F
- Norges Bank (Norway SWF) exited2025-11-12−21,300 shares · 2024Q313F
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 positions0
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Added to6
- Izzy Englander (Millennium Mgmt)+561,176$36.0M
- Wellington Management+504,680$32.4M
- Ron Baron (Baron Capital / BAMCO)+132,267$8.5M
- Ken Griffin (Citadel Advisors)+89,738$5.8M
- AQR Capital Management+1,707$110K
- T. Rowe Price+724,201$46K
Trimmed1
- Jeremy Grantham (GMO)−246,028$15.8M
Exited0
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Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 8 | $3.54B |
| 2022Q2 | 7 | $2.88B |
| 2022Q3 | 7 | $2.4M |
| 2022Q4 | 9 | $211.8M |
| 2023Q1 | 10 | $234.9M |
| 2023Q2 | 14 | $295.6M |
| 2023Q3 | 11 | $225.5M |
| 2023Q4 | 12 | $254.8M |
| 2024Q1 | 10 | $574.1M |
| 2024Q2 | 14 | $764.4M |
| 2024Q3 | 10 | $468.1M |
| 2024Q4 | 11 | $147.8M |
| 2025Q1 | 10 | $466.2M |
| 2025Q2 | 11 | $586.6M |
| 2025Q3 | 8 | $808.3M |
| 2025Q4 | 8 | $859.6M |
Who owns STEP
8 super-investors · 2025Q4
Tracked stake
18.49M
shares
Combined value
$860M
% of shares outstanding
—
shares-out unknown
Quarter action mix
Added7Trim1
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Wellington Management | 6.23M | $400M |
| 2 | Izzy Englander Millennium Mgmt | 4.46M | $286M |
| 3 | Ken Griffin Citadel Advisors | 1.60M | $103M |
| 4 | Ron Baron Baron Capital / BAMCO | 730.6K | $47M |
| 5 | Jeremy Grantham GMO | 352.4K | $23M |
| 6 | AQR Capital Management | 20.3K | $1M |
| 7 | T. Rowe Price | 5.10M | $327K |
| 8 | Ken Griffin Citadel Advisors | 4.9K | $314K |
Recent moves
20 transactions
- +89,738 · 2025Q4
- +504,680 · 2025Q4
- −246,028 · 2025Q4
- +132,267 · 2025Q4
- +724,201 · 2025Q4
- +561,176 · 2025Q4
- +1,707 · 2025Q4
- −502,952 · 2025Q3
- TRIMT. Rowe Price−1,679,513 · 2025Q3
- −12,000 · 2025Q3
- +2,658 · 2025Q3
- +2,257,880 · 2025Q3
- +457,775 · 2025Q3
- −13,656 · 2025Q3
- +5,604 · 2025Q3
- −21,300 · 2024Q3
- +1,435,100 · 2025Q2
- −114,964 · 2025Q2
- +12,000 · 2025Q2
- +19,313 · 2025Q2
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