Security key
86627T108
- Security type / class
- Equity / COM
- Total 13F shares
- 97,848,320
- Total 13F value
- $2,079,803,739
- Share change
- +1,205,626
- Put/Call ratio
- 67%
- SEC-reported price per share
- $21.28
- Number of holders
- 225
- Value change
- +$34,103,835
- Number of buys
- 129
- Number of sells
- 111
Open additional details 1 more signal available
Report period
Q2 2025
Institutions
225
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
31 Mar 2025
13F
Highest disclosed value: $471,155,646
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 $471.16M.
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
$471.16M
VANGUARD GROUP INC
$224.55M
FMR LLC
$180.13M
BlackRock, Inc.
$161.99M
PRICE T ROWE ASSOCIATES INC /MD/
$126.5M
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
|
$471,155,646
24,424,865 shares
|
— | 31 Mar 2025 |
| VANGUARD GROUP INC |
13F
Company
|
—
class O/S missing
|
$224,545,380
11,640,507 shares
|
— | 31 Mar 2025 |
| FMR LLC |
13F
Company
|
—
class O/S missing
|
$180,134,326
9,338,223 shares
|
— | 31 Mar 2025 |
| BlackRock, Inc. |
13F
Company
|
—
class O/S missing
|
$161,988,855
8,397,556 shares
|
— | 31 Mar 2025 |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13F
Company
|
—
class O/S missing
|
$126,501,000
6,557,804 shares
|
— | 31 Mar 2025 |
| STATE STREET CORP |
13F
Company
|
—
class O/S missing
|
$93,583,275
4,851,388 shares
|
— | 31 Mar 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 Q2 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
225
Shares
97,848,320
Rows available
225
| 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 Q2 2025 vs Q1 2025 Across Filers
Q1 2025 holders
199
Q2 2025 holders
225
Holder diff
26
| Investor | Q1 2025 Shares | Q2 2025 Shares | Share Diff | Share Chg % | Q1 2025 value | Q2 2025 value | Value change | Value Chg % |
|---|