Security key
48576U106
Karyopharm Therapeutics Inc. - Common Stock, par value $0.0001 per share (KPTI)
CUSIP: 48576U106
Q1 2018 13F Holders as of 31 Mar 2018
- Security type / class
- Equity / Common Stock, par value $0.0001 per share
- Total 13F shares
- 30,891,981
- Total 13F value
- $414,567,351
- Share change
- -78,153
- Put/Call ratio
- 112%
- SEC-reported price per share
- $13.42
- Number of holders
- 87
- Value change
- +$174,090
- Number of buys
- 52
- Number of sells
- 34
- Shares outstanding
- 22,658,403
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2018
Institutions
87
Top holders
10
KPTI full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q3 2025
Karyopharm Therapeutics Inc. SEC filings
Karyopharm Therapeutics Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 48576U106
Recent filing periods:
Ownership snapshot
Top reported holders of KPTI - Karyopharm Therapeutics Inc. - Common Stock, par value $0.0001 per share (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
WELLINGTON MANAGEMENT GRO...
Disclosed value leader
WELLINGTON MANAGEMENT GRO...
Comparable rows
15/15
Latest evidence
31 Dec 2017
13F
Lead comparable stake: 27%
Showing 1-6 of 15 holder rows.
Quick read
WELLINGTON MANAGEMENT GROUP LLP leads the comparable SEC ownership view at 27%.
15 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 WELLINGTON MANAGEMENT GROUP LLP's linked filing trail.
Comparable ownership
Top 5
WELLINGTON MANAGEMENT GROUP LLP
27%
FMR LLC
18%
Palo Alto Investors LP
16%
Point72 Asset Management, L.P.
15%
FRANKLIN RESOURCES INC
15%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| WELLINGTON MANAGEMENT GROUP LLP |
13F
Company
|
27%
|
$58,010,000
6,042,653 shares
|
— | 31 Dec 2017 |
| FMR LLC |
13F
Company
|
18%
|
$38,237,000
3,983,042 shares
|
— | 31 Dec 2017 |
| Palo Alto Investors LP |
13F
Company
|
16%
|
$34,027,000
3,544,439 shares
|
— | 31 Dec 2017 |
| Point72 Asset Management, L.P. |
13F
Company
|
15%
|
$32,179,000
3,351,996 shares
|
— | 31 Dec 2017 |
| FRANKLIN RESOURCES INC |
13F
Company
|
15%
|
$32,041,000
3,337,569 shares
|
— | 31 Dec 2017 |
| BlackRock Finance, Inc. |
13F
Company
|
12%
|
$25,335,000
2,639,151 shares
|
— | 31 Dec 2017 |
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 Q1 2018
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
87
Shares
30,891,981
Rows available
87
| 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 Q1 2018 vs Q4 2025 Across Filers
Q4 2025 holders
0
Q1 2018 holders
87
Holder diff
87
| Investor | Q4 2025 Shares | Q1 2018 Shares | Share Diff | Share Chg % | Q4 2025 value | Q1 2018 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend