SUMMIT THERAPEUTICS PLC
DIESES SYMBOL IST NICHT MEHR AKTIV
| Security | GB:SUMM / SUMMIT THERAPEUTICS PLC |
| Institution | Simplex Trading, Llc |
Simplex Trading, Llc ownership in SUMM / SUMMIT THERAPEUTICS PLC
Simplex Trading, Llc has a history of taking positions in derivatives of the underlying security (SUMM) in the form of stock options. The firm currently holds call options representing 27,000 of underlying shares valued at $511,920 USD and put options representing 78,800 of underlying shares valued at $1,494,048 USD .
Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.
Institutional Put/Call Ratios
(Premium Subscription Required)In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.
Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.
Disclosed Call Options
| File Date |
Effective Date | Form | Security | Class | ID | Opt | Avg Share Price |
Shares | ΔShares (%) |
Value (x1000) |
ΔValue (%) |
Prior Allocation (%) |
Allocation (%) |
ΔAllocation (%) |
Cost Basis (x1000) |
Profit (x1000) |
Return (%) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-05-14 | 2026-03-31 | SUMMIT THERAPEUTICS | CALL | Call | 27,000 | -81.34 | 512 | -79.80 | n/a | n/a | n/a | ||||||
| 2026-02-11 | 2025-12-31 | SUMMIT THERAPEUTICS | CALL | Call | 144,700 | -34.32 | 2,531 | 63,150.00 | n/a | n/a | n/a | ||||||
| 2025-11-12 | 2025-09-30 | SUMMIT THERAPEUTICS | CALL | Call | 220,300 | -37.43 | 5 | -42.86 | n/a | n/a | n/a | ||||||
| 2025-08-05 | 2025-06-30 | SUMMIT THERAPEUTICS | CALL | Call | 352,100 | 37.81 | 7 | 75.00 | n/a | n/a | n/a | ||||||
| 2025-05-12 | 2025-03-31 | SUMMIT THERAPEUTICS | CALL | Call | 255,500 | 16.77 | 5 | 33.33 | n/a | n/a | n/a | ||||||
| 2025-02-11 | 2024-12-31 | SUMMIT THERAPEUTICS | CALL | Call | 218,800 | 63.04 | 4 | 50.00 | n/a | n/a | n/a | ||||||
| 2024-11-08 | 2024-09-30 | SUMMIT THERAPEUTICS | CALL | Call | 134,200 | 7.96 | 3 | n/a | n/a | n/a | |||||||
| 2024-07-25 | 2024-06-30 | SUMMIT THERAPEUTICS | CALL | Call | 124,300 | 415.77 | 1 | n/a | n/a | n/a | |||||||
| 2024-04-25 | 2024-03-31 | SUMMIT THERAPEUTICS | CALL | Call | 24,100 | -35.22 | 0 | n/a | n/a | n/a | |||||||
| 2024-02-02 | 2023-12-31 | SUMMIT THERAPEUTICS | CALL | Call | 37,200 | -38.00 | 0 | n/a | n/a | n/a | |||||||
| 2023-11-01 | 2023-09-30 | SUMMIT THERAPEUTICS | CALL | Call | 60,000 | 733.33 | 0 | n/a | n/a | n/a | |||||||
| 2023-08-04 | 2023-06-30 | SUMMIT THERAPEUTICS | CALL | Call | 7,200 | -68.83 | 0 | n/a | n/a | n/a | |||||||
| 2023-04-27 | 2023-03-31 | SUMMIT THERAPEUTICS | CALL | Call | 23,100 | -51.88 | 0 | n/a | n/a | n/a | |||||||
| 2023-02-02 | 2022-12-31 | SUMMIT THERAPEUTICS | CALL | Call | 48,000 | 122.22 | 0 | -100.00 | n/a | n/a | n/a | ||||||
| 2022-11-04 | 2022-09-30 | SUMMIT THERAPEUTICS | CALL | Call | 21,600 | 10,700.00 | 25 | n/a | n/a | n/a | |||||||
| 2022-08-03 | 2022-06-30 | SUMMIT THERAPEUTICS | CALL | Call | 200 | 0.00 | 0 | n/a | n/a | n/a | |||||||
| 2022-05-02 | 2022-03-31 | SUMMIT THERAPEUTICS | CALL | Call | 200 | -75.00 | 0 | -100.00 | n/a | n/a | n/a | ||||||
| 2022-02-23 | 2021-12-31 | SUMMIT THERAPEUTICS | CALL | Call | 800 | -69.23 | 2 | -90.00 | n/a | n/a | n/a | ||||||
| 2022-02-04 | 2021-12-31 | SUMMIT THERAPEUTICS | CALL | Call | 2,600 | 20 | n/a | n/a | n/a | ||||||||
| 2021-10-28 | 2021-09-30 | SUMMIT THERAPEUTICS | CALL | Call | 2,600 | 0.00 | 20 | 5.26 | n/a | n/a | n/a | ||||||
| 2021-08-12 | 2021-06-30 | SUMMIT THERAPEUTICS | CALL | Call | 2,600 | 37,042.86 | 19 | 375.00 | n/a | n/a | n/a | ||||||
| 2021-04-26 | 2021-03-31 | SUMMIT THERAPEUTICS | CALL | Call | 7 | 4 | n/a | n/a | n/a |
Disclosed Put Options
| File Date |
Effective Date | Form | Security | Class | ID | Opt | Avg Share Price | Shares | ΔShares (%) |
Value (x1000) |
ΔValue (%) |
Prior Allocation (%) |
Allocation (%) |
ΔAllocation (%) |
Cost Basis (x1000) |
Profit (x1000) |
Return (%) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-05-14 | 2026-03-31 | SUMMIT THERAPEUTICS | PUT | Put | 78,800 | -24.81 | 1,494 | -18.45 | n/a | n/a | n/a | ||||||
| 2026-02-11 | 2025-12-31 | SUMMIT THERAPEUTICS | PUT | Put | 104,800 | -25.30 | 1,833 | 91,500.00 | n/a | n/a | n/a | ||||||
| 2025-11-12 | 2025-09-30 | SUMMIT THERAPEUTICS | PUT | Put | 140,300 | -40.48 | 3 | -60.00 | n/a | n/a | n/a | ||||||
| 2025-08-05 | 2025-06-30 | SUMMIT THERAPEUTICS | PUT | Put | 235,700 | 45.40 | 5 | 66.67 | n/a | n/a | n/a | ||||||
| 2025-05-12 | 2025-03-31 | SUMMIT THERAPEUTICS | PUT | Put | 162,100 | -27.08 | 3 | 0.00 | n/a | n/a | n/a | ||||||
| 2025-02-11 | 2024-12-31 | SUMMIT THERAPEUTICS | PUT | Put | 222,300 | -12.62 | 4 | -40.00 | n/a | n/a | n/a | ||||||
| 2024-11-08 | 2024-09-30 | SUMMIT THERAPEUTICS | PUT | Put | 254,400 | 1,812.78 | 6 | n/a | n/a | n/a | |||||||
| 2024-07-25 | 2024-06-30 | SUMMIT THERAPEUTICS | PUT | Put | 13,300 | 77.33 | 0 | n/a | n/a | n/a | |||||||
| 2024-04-25 | 2024-03-31 | SUMMIT THERAPEUTICS | PUT | Put | 7,500 | -25.00 | 0 | n/a | n/a | n/a | |||||||
| 2024-02-02 | 2023-12-31 | SUMMIT THERAPEUTICS | PUT | Put | 10,000 | -25.93 | 0 | n/a | n/a | n/a | |||||||
| 2023-11-01 | 2023-09-30 | SUMMIT THERAPEUTICS | PUT | Put | 13,500 | -35.41 | 0 | n/a | n/a | n/a | |||||||
| 2023-08-04 | 2023-06-30 | SUMMIT THERAPEUTICS | PUT | Put | 20,900 | -44.27 | 0 | n/a | n/a | n/a | |||||||
| 2023-04-27 | 2023-03-31 | SUMMIT THERAPEUTICS | PUT | Put | 37,500 | -6.72 | 0 | n/a | n/a | n/a | |||||||
| 2023-02-02 | 2022-12-31 | SUMMIT THERAPEUTICS | PUT | Put | 40,200 | 20,000.00 | 0 | n/a | n/a | n/a | |||||||
| 2022-11-04 | 2022-09-30 | SUMMIT THERAPEUTICS | PUT | Put | 200 | 0 | n/a | n/a | n/a | ||||||||
| 2022-05-02 | 2022-03-31 | SUMMIT THERAPEUTICS | PUT | Put | 0 | -100.00 | 0 | -100.00 | n/a | n/a | n/a | ||||||
| 2022-02-23 | 2021-12-31 | SUMMIT THERAPEUTICS | PUT | Put | 2,300 | 6 | n/a | n/a | n/a |
Legend
- Shares
- The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
- Value
- The total value of the shares as of the effective date. This is provided in the filing.
- Avg. Share Price
- The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
- Class
- This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
- Allocation (%)
- The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
- Change in Allocation
- The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
- Change in Allocation (%)
- The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
- Cost Basis
- The total cost of the shares held. This is calculated as reported shares * avg. share price
- Unrealized Gain/Loss
- This is the market value of the position as of the effective date minus the cost basis.
