Ticker · CUSIP 773903109
Holders (tracked)
21
Combined shares
5,293,137
Combined value
$1.49B
Last close
$402.81
Quarter
2025Q4
Tracked holders · last 8 quarters
+6 vs previous quarter over the last 8.
Price is +43.2% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
28 events
- Fordenwalt Matthew W. · SVP Lifecycle Services2026-04-13Sold $480.0K @ $400.00Insider sell
- Perducat Cyril · SVP, Chief Technology Officer2026-04-10Sold $78.2K @ $395.00Insider sell
- Jeremy Grantham (GMO) opened position2026-02-17+10,826 shares · 2025Q413F
- Ken Griffin (Citadel Advisors) added2026-02-17+55,817 shares · 2025Q413F
- Two Sigma Investments trimmed2026-02-17−2,120 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) added2026-02-17+60,064 shares · 2025Q413F
- Steve Cohen (Point72) opened position2026-02-17+20,000 shares · 2025Q413F
- D.E. Shaw & Co. trimmed2026-02-17−71,699 shares · 2025Q413F
- T. Rowe Price trimmed2026-02-17−1,755,056 shares · 2025Q413F
- Wellington Management trimmed2026-02-17−1,216 shares · 2025Q413F
- AQR Capital Management added2026-02-17+5,227 shares · 2025Q413F
- +5,300 shares · 2025Q413F
- −9,596 shares · 2025Q413F
- Norges Bank (Norway SWF) opened position2026-02-10+1,582,224 shares · 2025Q413F
- Ken Fisher (Fisher Asset Mgmt) added2026-02-09+35,028 shares · 2025Q413F
- Mario Gabelli (GAMCO) added2026-02-05+118 shares · 2025Q413F
- −56,694 shares · 2025Q313F
- AQR Capital Management added2025-11-14+7,786 shares · 2025Q313F
- Izzy Englander (Millennium Mgmt) trimmed2025-11-14−92,774 shares · 2025Q313F
- Two Sigma Investments trimmed2025-11-14−44,290 shares · 2025Q313F
- D.E. Shaw & Co. added2025-11-14+44,644 shares · 2025Q313F
- T. Rowe Price trimmed2025-11-14−1,761,977 shares · 2025Q313F
- Wellington Management trimmed2025-11-14−651,010 shares · 2025Q313F
- Norges Bank (Norway SWF) exited2025-11-13−1,109,597 shares · 2025Q313F
- Ray Dalio (Bridgewater Associates) added2025-11-13+5,812 shares · 2025Q313F
- Norges Bank (Norway SWF) added2025-11-12+11,024 shares · 2024Q313F
- Mario Gabelli (GAMCO) trimmed2025-11-12−2,080 shares · 2025Q313F
- Ken Fisher (Fisher Asset Mgmt) added2025-11-12+29,998 shares · 2025Q313F
Insider activity
Last 30 days
Net (open-market)
−$558.2K
Buys
0 · $0
Sells
2 · $558.2K
Unique insiders
2
| Date | Insider | Code | Shares | Price | Value |
|---|---|---|---|---|---|
| 04-13 | Fordenwalt Matthew W. SVP Lifecycle Services · Officer | M | 1,200 | $196.43 | $235.7K |
| 04-13 | Fordenwalt Matthew W. SVP Lifecycle Services · Officer | S | 1,200 | $400.00 | $480.0K |
| 04-10 | Perducat Cyril SVP, Chief Technology Officer · Officer | S | 198 | $395.00 | $78.2K |
| 04-09 | Perducat Cyril SVP, Chief Technology Officer · Officer | M | 581 | — | $0 |
Follow-the-investor returns
If you'd copied each holder of ROK…
Cost basis inferred from 13F share-delta history. Sorted by % return on the position they're still holding.
| Investor | First in | Cost basis | Return | Position value today |
|---|---|---|---|---|
| T. Rowe Price | 2016Q1 | $6.85 | +5781.2% | $591.4M |
| Mario Gabelli (GAMCO) | 2016Q1 | $115.99 | +247.3% | $45.8M |
| Tom Gayner (Markel Group) | 2016Q1 | $144.80 | +178.2% | $62.4M |
| Wellington Management | 2016Q1 | $258.37 | +55.9% | $512K |
| Ken Fisher (Fisher Asset Mgmt) | 2016Q1 | $262.91 | +53.2% | $345.4M |
| Jeremy Grantham (GMO) | 2016Q1 | $274.94 | +46.5% | $4.4M |
| Steve Cohen (Point72) | 2017Q3 | $290.45 | +38.7% | $8.1M |
| D.E. Shaw & Co. | 2016Q1 | $308.31 | +30.7% | $644K |
| D.E. Shaw & Co. | 2016Q1 | $308.31 | +30.7% | $644K |
| Ray Dalio (Bridgewater Associates) | 2016Q1 | $310.50 | +29.7% | $419K |
| Two Sigma Investments | 2016Q2 | $317.81 | +26.7% | $5.8M |
| AQR Capital Management | 2016Q1 | $330.61 | +21.8% | $18.2M |
| Paul Tudor Jones (Tudor Investment) | 2016Q2 | $355.74 | +13.2% | $1.3M |
| Paul Tudor Jones (Tudor Investment) | 2016Q2 | $355.74 | +13.2% | $1.3M |
| Ken Griffin (Citadel Advisors) | 2016Q1 | $382.28 | +5.4% | $41.9M |
| Ken Griffin (Citadel Advisors) | 2016Q1 | $382.28 | +5.4% | $41.9M |
| Ken Griffin (Citadel Advisors) | 2016Q1 | $382.28 | +5.4% | $41.9M |
| Izzy Englander (Millennium Mgmt) | 2016Q1 | $387.78 | +3.9% | $3.1M |
| Izzy Englander (Millennium Mgmt) | 2016Q1 | $387.78 | +3.9% | $3.1M |
| Izzy Englander (Millennium Mgmt) | 2016Q1 | $387.78 | +3.9% | $3.1M |
| Norges Bank (Norway SWF) | 2016Q1 | $1045.07 | -61.5% | $637.3M |
Who moved on this name in 2025Q4
13F transactions reported for the latest quarter, grouped by direction.
New positions4
- Norges Bank (Norway SWF)+1,582,224$615.6M
- Steve Cohen (Point72)+20,000$7.8M
- Jeremy Grantham (GMO)+10,826$4.2M
- Paul Tudor Jones (Tudor Investment)+5,300$2.1M
Added to5
- Izzy Englander (Millennium Mgmt)+60,064$23.4M
- Ken Griffin (Citadel Advisors)+55,817$21.7M
- Ken Fisher (Fisher Asset Mgmt)+35,028$13.6M
- AQR Capital Management+5,227$2.0M
- Mario Gabelli (GAMCO)+118$46K
Trimmed5
- D.E. Shaw & Co.−71,699$27.9M
- Ray Dalio (Bridgewater Associates)−9,596$3.7M
- Two Sigma Investments−2,120$825K
- T. Rowe Price−1,755,056$683K
- Wellington Management−1,216$473K
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 17 | $353.44B |
| 2022Q2 | 20 | $240.75B |
| 2022Q3 | 23 | $218.5M |
| 2022Q4 | 21 | $2.74B |
| 2023Q1 | 20 | $3.01B |
| 2023Q2 | 20 | $3.51B |
| 2023Q3 | 22 | $3.25B |
| 2023Q4 | 16 | $3.69B |
| 2024Q1 | 17 | $3.02B |
| 2024Q2 | 16 | $3.22B |
| 2024Q3 | 18 | $879.8M |
| 2024Q4 | 16 | $737.9M |
| 2025Q1 | 15 | $619.4M |
| 2025Q2 | 19 | $1.36B |
| 2025Q3 | 15 | $728.0M |
| 2025Q4 | 21 | $1.49B |
Congress members trading this stock
| Date | Member | Type | Amount range | Filing |
|---|---|---|---|---|
| 2025-04-08 | Rob Bresnahan | Sell | $1K – $15K | PDF ↗ |
| 2025-02-25 | Rob Bresnahan | Buy | $1K – $15K | PDF ↗ |
Who owns ROK
21 super-investors · 2025Q4
Tracked stake
5.29M
shares
Combined value
$1.49B
% of shares outstanding
—
shares-out unknown
Quarter action mix
New5Added9Trim6Held1
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Norges Bank Norway SWF | 1.58M | $616M |
| 2 | Ken Fisher Fisher Asset Mgmt | 857.5K | $334M |
| 3 | Ken Griffin Citadel Advisors | 524.8K | $204M |
| 4 | Izzy Englander Millennium Mgmt | 222.5K | $87M |
| 5 | Tom Gayner Markel Group | 154.9K | $60M |
| 6 | Ken Griffin Citadel Advisors | 122.2K | $48M |
| 7 | Mario Gabelli GAMCO | 113.7K | $44M |
| 8 | Ken Griffin Citadel Advisors | 104.1K | $41M |
| 9 | AQR Capital Management | 45.1K | $18M |
| 10 | D.E. Shaw & Co. | 28.9K | $11M |
| 11 | Steve Cohen Point72 | 20.0K | $8M |
| 12 | Two Sigma Investments | 14.3K | $6M |
| 13 | Jeremy Grantham GMO | 10.8K | $4M |
| 14 | Izzy Englander Millennium Mgmt | 7.7K | $3M |
| 15 | Izzy Englander Millennium Mgmt | 7.1K | $3M |
| 16 | Paul Tudor Jones Tudor Investment | 3.3K | $1M |
| 17 | Paul Tudor Jones Tudor Investment | 2.0K | $778K |
| 18 | D.E. Shaw & Co. | 1.6K | $623K |
| 19 | T. Rowe Price | 1.47M | $571K |
| 20 | Wellington Management | 1.3K | $495K |
| 21 | Ray Dalio Bridgewater Associates | 1.0K | $405K |
Recent moves
20 transactions
- TRIMD.E. Shaw & Co.−71,699 · 2025Q4
- +10,826 · 2025Q4
- TRIMT. Rowe Price−1,755,056 · 2025Q4
- −1,216 · 2025Q4
- −2,120 · 2025Q4
- +5,227 · 2025Q4
- +60,064 · 2025Q4
- +20,000 · 2025Q4
- +55,817 · 2025Q4
- +5,300 · 2025Q4
- −9,596 · 2025Q4
- +1,582,224 · 2025Q4
- +35,028 · 2025Q4
- +118 · 2025Q4
- −56,694 · 2025Q3
- −92,774 · 2025Q3
- −44,290 · 2025Q3
- +44,644 · 2025Q3
- TRIMT. Rowe Price−1,761,977 · 2025Q3
- −651,010 · 2025Q3
Embed this chart
Paste this iframe anywhere to embed the live ROK chart.
<iframe src="https://openstocks.me/embed/stock/ROK" width="100%" height="480" frameborder="0" loading="lazy" title="ROK chart by OpenStocks" style="border:0;border-radius:12px;background:transparent"></iframe>