Ticker · CUSIP 12503M108
Holders (tracked)
20
Combined shares
4,491,478
Combined value
$1.04B
Last close
$309.38
Quarter
2025Q4
Tracked holders · last 8 quarters
+2 vs previous quarter over the last 8.
Price is +34.1% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
24 events
- Wellington Management trimmed2026-02-17−662 shares · 2025Q413F
- Ken Griffin (Citadel Advisors) added2026-02-17+180,087 shares · 2025Q413F
- D.E. Shaw & Co. trimmed2026-02-17−38,221 shares · 2025Q413F
- T. Rowe Price trimmed2026-02-17−67,126 shares · 2025Q413F
- Steve Cohen (Point72) exited2026-02-17−226,943 shares · 2025Q413F
- AQR Capital Management trimmed2026-02-17−49,352 shares · 2025Q413F
- Two Sigma Investments trimmed2026-02-17−139,622 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) trimmed2026-02-17−156,096 shares · 2025Q413F
- −9,478 shares · 2025Q413F
- Renaissance Technologies trimmed2026-02-12−203,518 shares · 2025Q413F
- Norges Bank (Norway SWF) opened position2026-02-10+1,412,661 shares · 2025Q413F
- Tom Gayner (Markel Group) added2026-02-06+13,250 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) added2025-11-14+14,339 shares · 2025Q313F
- Steve Cohen (Point72) added2025-11-14+140,932 shares · 2025Q313F
- Two Sigma Investments trimmed2025-11-14−68,849 shares · 2025Q313F
- D.E. Shaw & Co. trimmed2025-11-14−260,759 shares · 2025Q313F
- T. Rowe Price trimmed2025-11-14−131,710 shares · 2025Q313F
- Wellington Management added2025-11-14+134 shares · 2025Q313F
- AQR Capital Management trimmed2025-11-14−62,454 shares · 2025Q313F
- +27,323 shares · 2025Q313F
- Renaissance Technologies trimmed2025-11-13−315,900 shares · 2025Q313F
- Norges Bank (Norway SWF) exited2025-11-13−1,390,308 shares · 2025Q313F
- Norges Bank (Norway SWF) trimmed2025-11-12−76,330 shares · 2024Q313F
- Tom Gayner (Markel Group) added2025-10-31+9,500 shares · 2025Q313F
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of CBOE…
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 | $8.13 | +3706.1% | $112.3M |
| Renaissance Technologies | 2016Q1 | $74.43 | +315.7% | $352.5M |
| Wellington Management | 2016Q4 | $142.90 | +116.5% | $395K |
| AQR Capital Management | 2016Q1 | $166.79 | +85.5% | $134.3M |
| Ray Dalio (Bridgewater Associates) | 2021Q1 | $217.38 | +42.3% | $5.5M |
| Mario Gabelli (GAMCO) | 2025Q2 | $233.21 | +32.7% | $464K |
| D.E. Shaw & Co. | 2016Q1 | $237.43 | +30.3% | $7.4M |
| D.E. Shaw & Co. | 2016Q1 | $237.43 | +30.3% | $7.4M |
| Tom Gayner (Markel Group) | 2025Q1 | $240.60 | +28.6% | $12.9M |
| Ken Griffin (Citadel Advisors) | 2016Q1 | $245.81 | +25.9% | $20.7M |
| Ken Griffin (Citadel Advisors) | 2016Q1 | $245.81 | +25.9% | $20.7M |
| Ken Griffin (Citadel Advisors) | 2016Q1 | $245.81 | +25.9% | $20.7M |
| Izzy Englander (Millennium Mgmt) | 2016Q1 | $249.42 | +24.0% | $1.3M |
| Izzy Englander (Millennium Mgmt) | 2016Q1 | $249.42 | +24.0% | $1.3M |
| Izzy Englander (Millennium Mgmt) | 2016Q1 | $249.42 | +24.0% | $1.3M |
| Steve Cohen (Point72) | 2016Q2 | $250.42 | +23.5% | $3.1M |
| Steve Cohen (Point72) | 2016Q2 | $250.42 | +23.5% | $3.1M |
| Two Sigma Investments | 2016Q1 | $250.43 | +23.5% | $105.7M |
| Two Sigma Investments | 2016Q1 | $250.43 | +23.5% | $105.7M |
| Norges Bank (Norway SWF) | 2016Q1 | $3912.95 | -92.1% | $437.0M |
Who moved on this name in 2025Q4
13F transactions reported for the latest quarter, grouped by direction.
New positions1
- Norges Bank (Norway SWF)+1,412,661$354.6M
Added to2
- Ken Griffin (Citadel Advisors)+180,087$45.2M
- Tom Gayner (Markel Group)+13,250$3.3M
Trimmed8
- Renaissance Technologies−203,518$51.1M
- Izzy Englander (Millennium Mgmt)−156,096$39.2M
- Two Sigma Investments−139,622$35.0M
- AQR Capital Management−49,352$12.4M
- D.E. Shaw & Co.−38,221$9.6M
- Ray Dalio (Bridgewater Associates)−9,478$2.4M
- Wellington Management−662$166K
- T. Rowe Price−67,126$17K
Exited1
- Steve Cohen (Point72)−226,943$55.7M
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 15 | $112.99B |
| 2022Q2 | 16 | $115.31B |
| 2022Q3 | 20 | $140.0M |
| 2022Q4 | 17 | $1.95B |
| 2023Q1 | 19 | $2.00B |
| 2023Q2 | 17 | $2.02B |
| 2023Q3 | 17 | $2.29B |
| 2023Q4 | 18 | $2.82B |
| 2024Q1 | 14 | $2.79B |
| 2024Q2 | 16 | $2.75B |
| 2024Q3 | 16 | $1.16B |
| 2024Q4 | 15 | $1.02B |
| 2025Q1 | 17 | $809.5M |
| 2025Q2 | 18 | $1.18B |
| 2025Q3 | 18 | $860.1M |
| 2025Q4 | 20 | $1.04B |
Congress members trading this stock
| Date | Member | Type | Amount range | Filing |
|---|---|---|---|---|
| 2025-12-19 | Gilbert Cisneros | Sell (P) | $1K – $15K | PDF ↗ |
| 2025-11-12 | Gilbert Cisneros | Buy | $1K – $15K | PDF ↗ |
Who owns CBOE
20 super-investors · 2025Q4
Tracked stake
4.49M
shares
Combined value
$1.04B
% of shares outstanding
—
shares-out unknown
Quarter action mix
New1Added4Trim12Sold2Held1
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Norges Bank Norway SWF | 1.41M | $355M |
| 2 | Renaissance Technologies | 1.14M | $286M |
| 3 | AQR Capital Management | 434.2K | $109M |
| 4 | Ken Griffin Citadel Advisors | 379.4K | $95M |
| 5 | Two Sigma Investments | 341.7K | $86M |
| 6 | Ken Griffin Citadel Advisors | 162.4K | $41M |
| 7 | Ken Griffin Citadel Advisors | 66.9K | $17M |
| 8 | Tom Gayner Markel Group | 41.8K | $10M |
| 9 | D.E. Shaw & Co. | 39.9K | $10M |
| 10 | Izzy Englander Millennium Mgmt | 32.2K | $8M |
| 11 | D.E. Shaw & Co. | 23.9K | $6M |
| 12 | Ray Dalio Bridgewater Associates | 17.8K | $4M |
| 13 | Izzy Englander Millennium Mgmt | 14.0K | $4M |
| 14 | Steve Cohen Point72 | 10.0K | $3M |
| 15 | Izzy Englander Millennium Mgmt | 4.2K | $1M |
| 16 | Steve Cohen Point72 | 3.4K | $853K |
| 17 | Two Sigma Investments | 2.0K | $502K |
| 18 | Mario Gabelli GAMCO | 1.5K | $377K |
| 19 | Wellington Management | 1.3K | $321K |
| 20 | T. Rowe Price | 362.9K | $91K |
Recent moves
20 transactions
- +180,087 · 2025Q4
- −49,352 · 2025Q4
- −226,943 · 2025Q4
- −662 · 2025Q4
- −156,096 · 2025Q4
- TRIMD.E. Shaw & Co.−38,221 · 2025Q4
- −139,622 · 2025Q4
- TRIMT. Rowe Price−67,126 · 2025Q4
- −9,478 · 2025Q4
- −203,518 · 2025Q4
- +1,412,661 · 2025Q4
- +13,250 · 2025Q4
- +140,932 · 2025Q3
- +134 · 2025Q3
- TRIMD.E. Shaw & Co.−260,759 · 2025Q3
- +14,339 · 2025Q3
- TRIMT. Rowe Price−131,710 · 2025Q3
- −68,849 · 2025Q3
- −62,454 · 2025Q3
- −1,390,308 · 2025Q3
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