TWO SIGMA SECURITIES, LLC
Broker-DealerPosition in ATNM — Actinium Pharmaceuticals, Inc.
CIK 1450144
NEW YORK, NY
Position in ATNM
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$35,707
+$18,075 QoQ
Shares Held
35,887
+176.8% QoQ
Ownership
0.114%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
5 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in ATNM Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Jun 30, 2026TWO SIGMA SECURITIES, LLC holds $22,805,438 across 104 Biotechnology names.
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | REGN |
Regeneron Pharmaceuticals, Inc.
|
5,761 | $3,592,213 | |
| 2 | ALNY |
Alnylam Pharmaceuticals, Inc.
|
5,585 | $1,681,252 | |
| 3 | BBIO |
BridgeBio Pharma, Inc.
|
17,689 | $1,317,476 | |
| 4 | MDGL |
Madrigal Pharmaceuticals, Inc.
|
2,219 | $1,191,492 | |
| 5 | INSM |
INSMED Inc
|
10,338 | $1,102,237 | |
| 6 | HALO |
Halozyme Therapeutics, Inc.
|
12,525 | $980,331 | |
| 7 | ARWR |
Arrowhead Pharmaceuticals, Inc.
|
11,256 | $917,476 | |
| 8 | AXSM |
Axsome Therapeutics, Inc.
|
3,708 | $907,607 |
All Filings in ATNM
Export CSV
5 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $35,707 | 35,887 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $17,632 | 12,965 | Shares | Sole | 2026-02-17 | |
| 2022-06-30 | $60,721 | 12,624 | Shares | Sole | 2022-08-15 | |
| 2020-06-30 | $13,111 | 37,248 | Shares | Sole | 2020-09-10 | |
| 2020-03-31 | $2,660 | 13,715 | Shares | Sole | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||