Security key
86627T108
- Security type / class
- Equity / COM
- Total 13F shares
- 117,788,001
- Total 13F value
- $2,060,259,964
- Share change
- +14,928,945
- Put/Call ratio
- 149%
- SEC-reported price per share
- $17.49
- Number of holders
- 206
- Value change
- +$249,329,722
- Number of buys
- 102
- Number of sells
- 123
Open additional details 1 more signal available
Report period
Q4 2025
Institutions
206
Top holders
10
SMMT full security history
Ownership snapshot
Full 13F holder table
Summit Therapeutics Inc. SEC filings
Summit Therapeutics Inc. company facts
Broader feeds
Ownership snapshot
Top reported holders of SMMT - Summit Therapeutics Inc. - COM (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BAKER BROS. ADVISORS LP
Disclosed value leader
BAKER BROS. ADVISORS LP
Comparable rows
0/15
Latest evidence
30 Sep 2025
13F
Highest disclosed value: $696,716,643
15 rows are not safely comparable across share classes.
Showing 1-6 of 15 holder rows.
Quick read
BAKER BROS. ADVISORS LP has the largest disclosed position value at $696.72M.
0 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BAKER BROS. ADVISORS LP's linked filing trail.
Disclosed position value
Top 5
BAKER BROS. ADVISORS LP
$696.72M
VANGUARD GROUP INC
$235.11M
FMR LLC
$184.24M
BlackRock, Inc.
$152.14M
STATE STREET CORP
$131.44M
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BAKER BROS. ADVISORS LP |
13F
Company
|
—
class O/S missing
|
$696,716,643
33,722,974 shares
|
— | 30 Sep 2025 |
| VANGUARD GROUP INC |
13F
Company
|
—
class O/S missing
|
$235,105,181
11,379,728 shares
|
— | 30 Sep 2025 |
| FMR LLC |
13F
Company
|
—
class O/S missing
|
$184,243,549
8,917,887 shares
|
— | 30 Sep 2025 |
| BlackRock, Inc. |
13F
Company
|
—
class O/S missing
|
$152,135,956
7,363,793 shares
|
— | 30 Sep 2025 |
| STATE STREET CORP |
13F
Company
|
—
class O/S missing
|
$131,437,598
6,361,936 shares
|
— | 30 Sep 2025 |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13F
Company
|
—
class O/S missing
|
$93,773,000
4,538,823 shares
|
— | 30 Sep 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q4 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
206
Shares
117,788,001
Rows available
206
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
230
Q4 2025 holders
206
Holder diff
-24
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 value | Q4 2025 value | Value change | Value Chg % |
|---|