Ticker · CUSIP 831865209
Holders (tracked)
15
Combined shares
5,030,119
Combined value
$336.41M
Last close
$64.82
Quarter
2025Q4
Price · 1Y$64.82+2.95 (+4.76%)H $80.47 · L $60.47 · Avg Vol 1.4M
Congress sell
Tracked holders · last 8 quarters
+2 vs previous quarter over the last 8.
Price is -3.1% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
27 events
- +84,274 shares · 2025Q4Position
- Ken Griffin (Citadel Advisors) trimmed2026-02-17−276,310 shares · 2025Q4Position
- D.E. Shaw & Co. exited2026-02-17−5,233 shares · 2025Q4Position
- AQR Capital Management added2026-02-17+617,179 shares · 2025Q4Position
- Two Sigma Investments opened position2026-02-17+52,007 shares · 2025Q4Position
- Izzy Englander (Millennium Mgmt) trimmed2026-02-17−207,101 shares · 2025Q4Position
- Steve Cohen (Point72) exited2026-02-17−82,190 shares · 2025Q4Position
- T. Rowe Price trimmed2026-02-17−17,809 shares · 2025Q4Position
- Wellington Management opened position2026-02-17+344,917 shares · 2025Q4Position
- Jeremy Grantham (GMO) added2026-02-17+18,989 shares · 2025Q4Position
- Ray Dalio (Bridgewater Associates) added2026-02-13+122,542 shares · 2025Q4Position
- Renaissance Technologies added2026-02-12+224,800 shares · 2025Q4Position
- Norges Bank (Norway SWF) opened position2026-02-10+1,451,866 shares · 2025Q4Position
- Ken Fisher (Fisher Asset Mgmt) exited2026-02-09−39,598 shares · 2025Q4Position
- −201,360 shares · 2025Q3Position
- D.E. Shaw & Co. trimmed2025-11-14−283,710 shares · 2025Q3Position
- AQR Capital Management added2025-11-14+188,380 shares · 2025Q3Position
- Izzy Englander (Millennium Mgmt) trimmed2025-11-14−1,061,715 shares · 2025Q3Position
- Steve Cohen (Point72) trimmed2025-11-14−10,198 shares · 2025Q3Position
- Two Sigma Investments exited2025-11-14−47,636 shares · 2025Q3Position
- T. Rowe Price trimmed2025-11-14−7,242 shares · 2025Q3Position
- +76,251 shares · 2025Q3Position
- Renaissance Technologies trimmed2025-11-13−207,200 shares · 2025Q3Position
- Norges Bank (Norway SWF) exited2025-11-13−1,402,144 shares · 2025Q3Position
- Jeremy Grantham (GMO) trimmed2025-11-13−2,429 shares · 2025Q3Position
- Ken Fisher (Fisher Asset Mgmt) trimmed2025-11-12−546 shares · 2025Q3Position
- Norges Bank (Norway SWF) trimmed2025-11-12−9,243 shares · 2024Q3Position
Insider activity
Last 30 days
Net (open-market)
$0
Buys
0 · $0
Sells
0 · $0
Unique insiders
5
| Date | Insider | Code | Shares | Price | Value |
|---|---|---|---|---|---|
| 04-13 | MARTIN LOIS M Director | A | 2,262 | $66.32 | $150.0K |
| 04-13 | MAPES CHRISTOPHER L Director | A | 2,262 | $66.32 | $150.0K |
| 04-13 | SMITH MARK D Director | A | 2,262 | $66.32 | $150.0K |
| 04-13 | Fister Todd W Director | A | 2,262 | $66.32 | $150.0K |
| 04-13 | Kadri Ilham Director | A | 2,262 | $66.32 | $150.0K |
Follow-the-investor returns
If you'd copied each holder of AOS…
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 |
|---|---|---|---|---|
| T. Rowe Price | 2016Q1 | $61.23 | +5.9% | $13.7M |
| Mario Gabelli (GAMCO) | 2016Q1 | $63.87 | +1.5% | $4.6M |
| Jeremy Grantham (GMO) | 2020Q3 | $65.86 | -1.6% | $3.3M |
| Wellington Management | 2016Q1 | $66.05 | -1.9% | $22.4M |
| Two Sigma Investments | 2016Q3 | $66.35 | -2.3% | $3.4M |
| Paul Tudor Jones (Tudor Investment) | 2016Q2 | $66.81 | -3.0% | $5.5M |
| Paul Tudor Jones (Tudor Investment) | 2016Q2 | $66.81 | -3.0% | $5.5M |
| Renaissance Technologies | 2016Q1 | $67.24 | -3.6% | $41.0M |
| Ken Griffin (Citadel Advisors) | 2016Q3 | $67.33 | -3.7% | $12.3M |
| Ken Griffin (Citadel Advisors) | 2016Q3 | $67.33 | -3.7% | $12.3M |
| Ken Griffin (Citadel Advisors) | 2016Q3 | $67.33 | -3.7% | $12.3M |
| Ray Dalio (Bridgewater Associates) | 2019Q4 | $69.14 | -6.2% | $12.9M |
| AQR Capital Management | 2016Q1 | $69.73 | -7.0% | $82.9M |
| Izzy Englander (Millennium Mgmt) | 2016Q1 | $71.81 | -9.7% | $27.2M |
| Norges Bank (Norway SWF) | 2016Q1 | $73.39 | -11.7% | $94.1M |
Who moved on this name in 2025Q4
Position changes reported for the latest quarter, grouped by direction.
New positions4
- Norges Bank (Norway SWF)+1,451,866$97.1M
- Wellington Management+344,917$23.1M
- Paul Tudor Jones (Tudor Investment)+84,274$5.6M
- Two Sigma Investments+52,007$3.5M
Added to4
- AQR Capital Management+617,179$41.3M
- Renaissance Technologies+224,800$15.0M
- Ray Dalio (Bridgewater Associates)+122,542$8.2M
- Jeremy Grantham (GMO)+18,989$1.3M
Trimmed3
- Ken Griffin (Citadel Advisors)−276,310$18.5M
- Izzy Englander (Millennium Mgmt)−207,101$13.9M
- T. Rowe Price−17,809$1K
Exited3
- Steve Cohen (Point72)−82,190$6.0M
- Ken Fisher (Fisher Asset Mgmt)−39,598$2.9M
- D.E. Shaw & Co.−5,233$384K
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 14 | $79.40B |
| 2022Q2 | 13 | $67.10B |
| 2022Q3 | 17 | $695.2M |
| 2022Q4 | 16 | $812.1M |
| 2023Q1 | 16 | $1.12B |
| 2023Q2 | 17 | $1.18B |
| 2023Q3 | 16 | $1.16B |
| 2023Q4 | 13 | $1.32B |
| 2024Q1 | 14 | $1.49B |
| 2024Q2 | 14 | $1.24B |
| 2024Q3 | 13 | $499.1M |
| 2024Q4 | 11 | $406.0M |
| 2025Q1 | 16 | $316.4M |
| 2025Q2 | 17 | $386.6M |
| 2025Q3 | 13 | $191.6M |
| 2025Q4 | 15 | $336.4M |
Congress members trading this stock
| Date | Member | Type | Amount range | Filing |
|---|---|---|---|---|
| 2025-09-25 | Julie Johnson | Sell | $1K – $15K | PDF ↗ |
| 2025-04-16 | April McClain Delaney | Sell | $1K – $15K | PDF ↗ |
| 2025-04-10 | April McClain Delaney | Sell (P) | $1K – $15K | PDF ↗ |
| 2025-03-06 | April McClain Delaney | Sell (P) | $1K – $15K | PDF ↗ |
| 2025-02-25 | Rob Bresnahan | Sell | $1K – $15K | PDF ↗ |
Who owns AOS
15 super-investors · 2025Q4
Tracked stake
5.03M
shares
Combined value
$336M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New5Added4Trim5Held1
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Norges Bank Norway SWF | 1.45M | $97M |
| 2 | AQR Capital Management | 1.28M | $86M |
| 3 | Renaissance Technologies | 632.7K | $42M |
| 4 | Izzy Englander Millennium Mgmt | 419.8K | $28M |
| 5 | Wellington Management | 344.9K | $23M |
| 6 | T. Rowe Price | 210.7K | $14M |
| 7 | Ray Dalio Bridgewater Associates | 198.8K | $13M |
| 8 | Ken Griffin Citadel Advisors | 189.5K | $13M |
| 9 | Paul Tudor Jones Tudor Investment | 84.3K | $6M |
| 10 | Mario Gabelli GAMCO | 70.5K | $5M |
| 11 | Two Sigma Investments | 52.0K | $3M |
| 12 | Jeremy Grantham GMO | 50.8K | $3M |
| 13 | Ken Griffin Citadel Advisors | 25.3K | $2M |
| 14 | Ken Griffin Citadel Advisors | 15.4K | $1M |
| 15 | Paul Tudor Jones Tudor Investment | 4.3K | $288K |
Recent moves
20 transactions
- +84,274 · 2025Q4
- +617,179 · 2025Q4
- +18,989 · 2025Q4
- −82,190 · 2025Q4
- −207,101 · 2025Q4
- SOLDD.E. Shaw & Co.−5,233 · 2025Q4
- −276,310 · 2025Q4
- +344,917 · 2025Q4
- TRIMT. Rowe Price−17,809 · 2025Q4
- +52,007 · 2025Q4
- +122,542 · 2025Q4
- +224,800 · 2025Q4
- +1,451,866 · 2025Q4
- −39,598 · 2025Q4
- −201,360 · 2025Q3
- −1,061,715 · 2025Q3
- −10,198 · 2025Q3
- −47,636 · 2025Q3
- TRIMD.E. Shaw & Co.−283,710 · 2025Q3
- TRIMT. Rowe Price−7,242 · 2025Q3
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