2026 Q1 Portfolio Activity
In 2026 Q1, Twin Securities, Inc. maintained a portfolio of 26 distinct positions. The most significant new addition was ARCELLX INC, now representing 3.01% of the total fund value. They heavily accumulated shares in ELECTRONIC ARTS INC, increasing the position by 86.4%. Conversely, Twin Securities, Inc. completely exited their position in CYBERARK SOFTWARE LTD.
Position History
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Total Positions
26
Quarter
2026 Q1
Top Holding
EA (44.2%)
Top 10 Concentration
97.6%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-26 of 26
Twin Securities, Inc. Full Holdings List — 2026 Q1
| Stock | History | Sector / Type | Port % | Prev % | Rank / Prev | Conviction | Change | % Change | Influence | Shares | Mkt Value | Avg Cost | Price Held | 1st Owned | Source | Source Date | Date Reported |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
EA
ELECTRONIC ARTS...
|
Communication Services | 44.21% | 18.73% |
#1
2
Prev: #3
|
9.0 | 207,112 | 86.4% |
P
S
|
446,948 | $91,119,289 | 2023 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
WBD
WARNER BROS DIS...
|
Communication Services | 17.32% | 12.28% |
#2
2
Prev: #4
|
7.5 | 184,926 | 16.6% |
P
S
|
1,299,915 | $35,695,666 | 2022 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
CWAN
CLEARWATER ANAL...
|
Technology | 13.36% | 0.45% |
#3
9
Prev: #12
|
8.0 | 1,114,776 | 2260.6% |
P
S
|
1,164,090 | $27,530,728 | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
HOLX
HOLOGIC INC
|
Healthcare | 6.57% | 2.41% |
#4
5
Prev: #9
|
6.1 | 94,523 | 111.8% |
P
S
|
179,036 | $13,533,331 | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
KVUE
KENVUE INC
|
Consumer Defensive | 4.02% | 2.67% |
#5
3
Prev: #8
|
4.1 | 74,934 | 18.5% |
P
S
|
480,517 | $8,284,113 | 2023 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
ACLX
ARCELLX INC
|
Healthcare | 3.01% | — |
#6
Prev: #—
|
4.7 | 53,982 | — |
NEW
|
53,982 | $6,198,213 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
TERN
TERNS PHARMACEU...
|
Healthcare | 2.97% | — |
#7
Prev: #—
|
4.7 | 115,958 | — |
NEW
|
115,958 | $6,113,306 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
APLS
APELLIS PHARMAC...
|
Healthcare | 2.49% | — |
#8
Prev: #—
|
4.5 | 127,440 | — |
NEW
|
127,440 | $5,126,911 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
RVMD
PUT
REVOLUTION MEDI...
|
PUT Option | 1.84% | — |
#9
Prev: #—
|
4.2 | 39,000 | — |
NEW
|
39,000 | $3,792,750 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
RVMD
REVOLUTION MEDI...
|
Healthcare | 1.82% | — |
#10
Prev: #—
|
4.2 | 38,593 | — |
NEW
|
38,593 | $3,753,169 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
OS
ONESTREAM INC
|
Technology | 0.70% | — |
#11
Prev: #—
|
3.8 | 60,372 | — |
NEW
|
60,372 | $1,448,928 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
TTWO
TAKE-TWO INTERA...
|
Communication Services | 0.62% | — |
#12
Prev: #—
|
3.7 | 6,500 | — |
NEW
|
6,500 | $1,283,750 | 2008 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
DAWN
DAY ONE BIOPHAR...
|
Healthcare | 0.33% | — |
#13
Prev: #—
|
3.6 | 31,626 | — |
NEW
|
31,626 | $678,061 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
N/A
ATRIUM THERAPEU...
|
|
Unknown | 0.32% | — |
#14
Prev: #—
|
3.6 | 49,913 | — |
NEW
|
49,913 | $667,337 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
TIC
TIC SOLUTIONS I...
|
Industrials | 0.25% | 0.30% |
#15
1
Prev: #14
|
1.1 | no change | no change |
P
S
|
77,339 | $508,891 | 2025 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
MANU
MANCHESTER UTD ...
|
Communication Services | 0.12% | 0.09% |
#16
1
Prev: #17
|
0.5 | 350 | 2.4% |
P
S
|
14,920 | $250,954 | 2024 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
SGRY
SURGERY PARTNER...
|
Healthcare | 0.06% | 1.01% |
#17
6
Prev: #11
|
0.0 | -160,233 | -94.1% |
P
S
|
10,025 | $119,498 | 2025 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
WBD
CALL
WARNER BROS DIS...
|
CALL Option | 0.00% | 0.22% |
Sold All 😨
(Was: #16) |
0.0 | -20,100 | -100.0% |
CLOSED
|
— | $— | 2022 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
MLYS
MINERALYS THERA...
|
Healthcare | 0.00% | 0.23% |
Sold All 😨
(Was: #15) |
0.0 | -16,737 | -100.0% |
CLOSED
|
— | $— | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
CDTX
CIDARA THERAPEU...
|
Unknown | 0.00% | 0.41% |
Sold All 😨
(Was: #13) |
0.0 | -4,900 | -100.0% |
CLOSED
|
— | $— | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
DAY
DAYFORCE INC
|
Unknown | 0.00% | 1.04% |
Sold All 😨
(Was: #10) |
0.0 | -39,241 | -100.0% |
CLOSED
|
— | $— | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
NSC
NORFOLK SOUTHN ...
|
Industrials | 0.00% | 2.78% |
Sold All 😨
(Was: #7) |
0.0 | -25,200 | -100.0% |
CLOSED
|
— | $— | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
CFLT
CONFLUENT INC
|
Technology | 0.00% | 5.84% |
Sold All 😨
(Was: #6) |
0.0 | -505,486 | -100.0% |
CLOSED
|
— | $— | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
RNA
AVIDITY BIOSCIE...
|
Healthcare | 0.00% | 10.07% |
Sold All 😨
(Was: #5) |
0.0 | -365,144 | -100.0% |
CLOSED
|
— | $— | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
EXAS
EXACT SCIENCES ...
|
Healthcare | 0.00% | 18.77% |
Sold All 😨
(Was: #2) |
0.0 | -483,589 | -100.0% |
CLOSED
|
— | $— | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
CYBR
CYBERARK SOFTWA...
|
Unknown | 0.00% | 22.70% |
Sold All 😨
(Was: #1) |
0.0 | -133,145 | -100.0% |
CLOSED
|
— | $— | 2025 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 |
Showing 1-26 of 26 holdings