Karyopharm Therapeutics Inc. - Common Stock, par value $0.0001 per share (KPTI)

CUSIP: 48576U106

Q1 2021 13F Holders as of 31 Mar 2021

Security type / class
Equity / Common Stock, par value $0.0001 per share
Total 13F shares
59,160,795
Total 13F value
$622,242,344
Holder snapshot 6 visible 7 signals
Share change
-3,844,560
Put/Call ratio
247%
SEC-reported price per share
$10.52
Number of holders
163
Value change
-$49,072,460
Number of buys
81
Open additional details 1 more signal available
Number of sells
79
Security identity Names, identifiers, and filing context for this profile. 1 source field
Shares outstanding
22,658,403

Security key

48576U106

Report period

Q1 2021

Institutions

163

Top holders

10

KPTI full security history Ownership snapshot Full 13F holder table Newer quarter: Q2 2021 Previous quarter: Q4 2020 Karyopharm Therapeutics Inc. SEC filings Karyopharm Therapeutics Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

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
BlackRock Finance, Inc.
Disclosed value leader
BlackRock Finance, Inc.
Comparable rows
15/15
Latest evidence
31 Dec 2020
13F Lead comparable stake: 33% Showing 1-6 of 15 holder rows.

Quick read

BlackRock Finance, Inc. leads the comparable SEC ownership view at 33%.

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 BlackRock Finance, Inc.'s linked filing trail.
Comparable ownership Top 5
BlackRock Finance, Inc. 33%
STATE STREET CORP 24%
Palo Alto Investors LP 23%
VANGUARD GROUP INC 15%
FRONTIER CAPITAL MANAGEMENT CO LLC 14%

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
BlackRock Finance, Inc.
13F
Company
13F
33%
$115,713,000
7,475,099 shares
 — 31 Dec 2020
STATE STREET CORP
13F
Company
13F
24%
$82,661,000
5,339,859 shares
 — 31 Dec 2020
Palo Alto Investors LP
13F
Company
13F
23%
$81,543,000
5,267,652 shares
 — 31 Dec 2020
VANGUARD GROUP INC
13F
Company
13F
15%
$53,877,000
3,480,399 shares
 — 31 Dec 2020
FRONTIER CAPITAL MANAGEMENT CO LLC
13F
Company
13F
14%
$48,415,000
3,127,571 shares
 — 31 Dec 2020
ALKEON CAPITAL MANAGEMENT LLC
13F
Company
13F
12%
$41,276,000
2,666,416 shares
 — 31 Dec 2020
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 2021

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions
163
Shares
59,160,795
Rows available
163
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 2021 vs Q4 2020 Across Filers

Q4 2020 holders
165
Q1 2021 holders
163
Holder diff
-2
Investor Q4 2020 Shares Q1 2021 Shares Share Diff Share Chg % Q4 2020 value Q1 2021 value Value change Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
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