AI Portfolio Summary
In 2025 Q4, Atika Capital Management LLC maintained a portfolio of 121 distinct positions. The most significant new addition to the portfolio was SPDR SERIES TRUST, which now represents 12.36% of the total fund value. Conversely, Atika Capital Management LLC completely exited their position in MICROSOFT CORP.
Total Positions
121
Quarter
2025 Q4
Top Holding
XBI (12.4%)
Top 10 Concentration
46.7%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
1-25 of 121
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
XBI
PUT
SPDR SERIES TRU...
|
PUT Option | 12.36% | — |
#1
Prev: #—
|
9.5 | 9,625 | no change |
NEW
|
9,625 | $117,357,625 | 2016 Q3 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
VRT
VERTIV HOLDINGS...
|
Industrials | 10.85% | 7.45% |
#2
1
Prev: #1
|
6.0 | 23,000 | 3.8% |
P
S
|
636,100 | $103,054,560 | 2023 Q2 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
LLY
ELI LILLY & CO
|
Healthcare | 4.65% | 2.53% |
#3
5
Prev: #8
|
3.9 | no change | no change |
P
S
|
41,100 | $44,169,348 | 2015 Q2 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
SATS
CALL
ECHOSTAR CORP
|
CALL Option | 4.56% | 2.45% |
#4
6
Prev: #10
|
3.3 | no change | no change |
P
S
|
3,983 | $43,295,210 | 2024 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
ISRG
INTUITIVE SURGI...
|
Healthcare | 3.41% | 2.06% |
#5
10
Prev: #15
|
2.4 | -20 | -0.0% |
P
S
|
57,216 | $32,404,853 | 2016 Q2 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
IWM
PUT
ISHARES TR
|
PUT Option | 2.36% | — |
#6
Prev: #—
|
4.4 | 910 | no change |
NEW
|
910 | $22,400,560 | 2014 Q1 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
TEVA
TEVA PHARMACEUT...
|
Healthcare | 2.36% | 0.36% |
#7
56
Prev: #63
|
3.9 | 493,000 | 220.1% |
P
S
|
717,000 | $22,377,569 | 2015 Q1 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
SHOP
SHOPIFY INC
|
Technology | 2.10% | 0.94% |
#8
27
Prev: #35
|
3.8 | 45,500 | 58.0% |
P
S
|
124,000 | $19,960,280 | 2015 Q2 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
MDGL
MADRIGAL PHARMA...
|
Healthcare | 2.08% | — |
#9
Prev: #—
|
4.3 | 34,000 | no change |
NEW
|
34,000 | $19,799,560 | 2018 Q1 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
BWXT
BWX TECHNOLOGIE...
|
Industrials | 1.98% | 3.23% |
#10
4
Prev: #6
|
0.8 | -108,500 | -49.9% |
P
S
|
108,900 | $18,822,276 | 2022 Q2 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
AMZN
AMAZON COM INC
|
Consumer Cyclical | 1.94% | 7.02% |
#11
9
Prev: #2
|
0.8 | -317,049 | -79.9% |
P
S
|
80,000 | $18,465,600 | 2015 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
COGT
COGENT BIOSCIEN...
|
Healthcare | 1.89% | — |
#12
Prev: #—
|
4.3 | 506,000 | no change |
NEW
|
506,000 | $17,973,119 | 2025 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
NFLX
NETFLIX INC
|
ETF | 1.78% | 1.74% |
#13
5
Prev: #18
|
3.7 | 162,000 | 900.0% |
P
S
|
180,000 | $16,876,800 | 2013 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
TLN
TALEN ENERGY CO...
|
Utilities | 1.66% | 2.37% |
#14
3
Prev: #11
|
0.7 | -27,200 | -39.2% |
P
S
|
42,100 | $15,780,764 | 2024 Q3 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
STX
SEAGATE TECHNOL...
|
Technology | 1.50% | 2.25% |
#15
3
Prev: #12
|
0.6 | -66,189 | -56.0% |
P
S
|
51,907 | $14,294,669 | 2025 Q3 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
CIEN
CIENA CORP
|
Technology | 1.48% | 0.94% |
#16
20
Prev: #36
|
0.6 | -20,000 | -25.0% |
P
S
|
60,000 | $14,032,201 | 2025 Q3 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
SATS
ECHOSTAR CORP
|
Communication Services | 1.43% | 0.42% |
#17
40
Prev: #57
|
3.6 | 55,806 | 80.9% |
P
S
|
124,806 | $13,566,412 | 2024 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
TSLA
TESLA INC
|
Consumer Cyclical | 1.42% | 1.11% |
#18
12
Prev: #30
|
1.1 | -1,000 | -3.2% |
P
S
|
30,000 | $13,491,600 | 2020 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
INSM
INSMED INC
|
Healthcare | 1.41% | 1.10% |
#19
12
Prev: #31
|
1.1 | -17,800 | -18.7% |
P
S
|
77,200 | $13,435,888 | 2024 Q2 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
GOOG
ALPHABET INC
|
Communication Services | 1.39% | — |
#20
Prev: #—
|
4.1 | 42,200 | no change |
NEW
|
42,200 | $13,242,360 | 2013 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
TERN
TERNS PHARMACEU...
|
Healthcare | 1.37% | — |
#21
Prev: #—
|
4.0 | 321,165 | no change |
NEW
|
321,165 | $12,975,066 | 2025 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
MTZ
MASTEC INC
|
Industrials | 1.28% | 0.68% |
#22
20
Prev: #42
|
3.0 | 16,498 | 41.8% |
P
S
|
55,998 | $12,172,285 | 2024 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
MELI
MERCADOLIBRE IN...
|
Consumer Cyclical | 1.26% | 1.49% |
#23
Prev: #23
|
0.5 | -1,983 | -25.0% |
P
S
|
5,947 | $11,978,805 | 2020 Q1 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
GH
GUARDANT HEALTH...
|
Healthcare | 1.16% | 0.67% |
#24
19
Prev: #43
|
1.0 | -25,000 | -18.8% |
P
S
|
108,000 | $11,031,120 | 2019 Q1 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
NET
CLOUDFLARE INC
|
Technology | 1.14% | 1.69% |
#25
6
Prev: #19
|
0.5 | -43,110 | -44.0% |
P
S
|
54,900 | $10,823,535 | 2020 Q2 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
MSFT
MICROSOFT CORP
|
Technology | 0.00% | 6.88% |
Sold All 😨
(Was: #3) |
0.0 | -165,000 | -100.0% |
CLOSED
|
— | $— | 2015 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
SPOT
SPOTIFY TECHNOL...
|
Communication Services | 0.00% | 3.53% |
Sold All 😨
(Was: #4) |
0.0 | -62,870 | -100.0% |
CLOSED
|
— | $— | 2018 Q2 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
MLM
MARTIN MARIETTA...
|
Basic Materials | 0.00% | 3.48% |
Sold All 😨
(Was: #5) |
0.0 | -68,483 | -100.0% |
CLOSED
|
— | $— | 2014 Q1 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
ANET
ARISTA NETWORKS...
|
Technology | 0.00% | 2.71% |
Sold All 😨
(Was: #7) |
0.0 | -231,208 | -100.0% |
CLOSED
|
— | $— | 2017 Q1 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
CEG
CONSTELLATION E...
|
Utilities | 0.00% | 2.51% |
Sold All 😨
(Was: #9) |
0.0 | -94,800 | -100.0% |
CLOSED
|
— | $— | 2024 Q2 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
GEV
GE VERNOVA INC
|
Industrials | 0.00% | 2.10% |
Sold All 😨
(Was: #13) |
0.0 | -42,439 | -100.0% |
CLOSED
|
— | $— | 2024 Q3 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
META
META PLATFORMS ...
|
Communication Services | 0.00% | 2.10% |
Sold All 😨
(Was: #14) |
0.0 | -35,500 | -100.0% |
CLOSED
|
— | $— | 2013 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
VST
VISTRA CORP
|
Utilities | 0.00% | 1.94% |
Sold All 😨
(Was: #16) |
0.0 | -123,000 | -100.0% |
CLOSED
|
— | $— | 2024 Q1 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
CYBR
CYBERARK SOFTWA...
|
Technology | 0.00% | 1.75% |
Sold All 😨
(Was: #17) |
0.0 | -44,855 | -100.0% |
CLOSED
|
— | $— | 2024 Q1 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
NBIS
NEBIUS GROUP N....
|
Communication Services | 0.00% | 1.63% |
Sold All 😨
(Was: #20) |
0.0 | -179,880 | -100.0% |
CLOSED
|
— | $— | 2025 Q2 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
RBLX
ROBLOX CORP
|
Communication Services | 0.00% | 1.59% |
Sold All 😨
(Was: #21) |
0.0 | -142,500 | -100.0% |
CLOSED
|
— | $— | 2021 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
VRNA
VERONA PHARMA P...
|
Unknown | 0.00% | 1.51% |
Sold All 😨
(Was: #22) |
0.0 | -176,000 | -100.0% |
CLOSED
|
— | $— | 2024 Q3 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
GKOS
GLAUKOS CORP
|
Healthcare | 0.00% | 1.39% |
Sold All 😨
(Was: #25) |
0.0 | -212,400 | -100.0% |
CLOSED
|
— | $— | 2016 Q2 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
CDTX
CIDARA THERAPEU...
|
Healthcare | 0.00% | 1.21% |
Sold All 😨
(Was: #27) |
0.0 | -157,320 | -100.0% |
CLOSED
|
— | $— | 2025 Q3 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
INSP
INSPIRE MED SYS...
|
Healthcare | 0.00% | 1.12% |
Sold All 😨
(Was: #28) |
0.0 | -187,600 | -100.0% |
CLOSED
|
— | $— | 2018 Q2 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
NVDA
NVIDIA CORPORAT...
|
Technology | 0.00% | 1.11% |
Sold All 😨
(Was: #29) |
0.0 | -73,900 | -100.0% |
CLOSED
|
— | $— | 2020 Q1 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
ADBE
ADOBE INC
|
Technology | 0.00% | 1.10% |
Sold All 😨
(Was: #32) |
0.0 | -38,698 | -100.0% |
CLOSED
|
— | $— | 2018 Q1 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
KVUE
CALL
KENVUE INC
|
CALL Option | 0.00% | 0.76% |
Sold All 😨
(Was: #39) |
0.0 | -5,785 | -100.0% |
CLOSED
|
— | $— | 2025 Q3 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
EYE
NATIONAL VISION...
|
Consumer Cyclical | 0.00% | 0.71% |
Sold All 😨
(Was: #40) |
0.0 | -301,000 | -100.0% |
CLOSED
|
— | $— | 2025 Q2 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
ASML
ASML HOLDING N ...
|
Technology | 0.00% | 0.68% |
Sold All 😨
(Was: #41) |
0.0 | -8,740 | -100.0% |
CLOSED
|
— | $— | 2023 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
NTRA
NATERA INC
|
Healthcare | 0.00% | 0.60% |
Sold All 😨
(Was: #44) |
0.0 | -46,497 | -100.0% |
CLOSED
|
— | $— | 2018 Q3 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
DHI
D R HORTON INC
|
Consumer Cyclical | 0.00% | 0.60% |
Sold All 😨
(Was: #45) |
0.0 | -44,000 | -100.0% |
CLOSED
|
— | $— | 2025 Q3 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
DUOL
DUOLINGO INC
|
Technology | 0.00% | 0.58% |
Sold All 😨
(Was: #46) |
0.0 | -22,200 | -100.0% |
CLOSED
|
— | $— | 2023 Q1 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
MLYS
MINERALYS THERA...
|
Healthcare | 0.00% | 0.53% |
Sold All 😨
(Was: #48) |
0.0 | -174,000 | -100.0% |
CLOSED
|
— | $— | 2025 Q3 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
STX
CALL
SEAGATE TECHNOL...
|
CALL Option | 0.00% | 0.44% |
Sold All 😨
(Was: #53) |
0.0 | -234 | -100.0% |
CLOSED
|
— | $— | 2025 Q3 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
CALX
CALIX INC
|
Technology | 0.00% | 0.44% |
Sold All 😨
(Was: #55) |
0.0 | -89,500 | -100.0% |
CLOSED
|
— | $— | 2020 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
QURE
UNIQURE NV
|
Healthcare | 0.00% | 0.42% |
Sold All 😨
(Was: #58) |
0.0 | -90,000 | -100.0% |
CLOSED
|
— | $— | 2019 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
GNRC
GENERAC HLDGS I...
|
Industrials | 0.00% | 0.42% |
Sold All 😨
(Was: #60) |
0.0 | -31,000 | -100.0% |
CLOSED
|
— | $— | 2025 Q3 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
SPNT
SIRIUSPOINT LTD
|
Financial Services | 0.00% | 0.38% |
Sold All 😨
(Was: #61) |
0.0 | -260,000 | -100.0% |
CLOSED
|
— | $— | 2025 Q1 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
KYMR
KYMERA THERAPEU...
|
Healthcare | 0.00% | 0.37% |
Sold All 😨
(Was: #62) |
0.0 | -81,300 | -100.0% |
CLOSED
|
— | $— | 2024 Q1 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
KMLM
CALL
KRANESHARES TRU...
|
CALL Option | 0.00% | 0.34% |
Sold All 😨
(Was: #66) |
0.0 | -1,000 | -100.0% |
CLOSED
|
— | $— | 2025 Q3 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
AVGO
BROADCOM INC
|
Technology | 0.00% | 0.31% |
Sold All 😨
(Was: #69) |
0.0 | -11,500 | -100.0% |
CLOSED
|
— | $— | 2025 Q3 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
AI
PUT
C3 AI INC
|
PUT Option | 0.00% | 0.29% |
Sold All 😨
(Was: #71) |
0.0 | -2,103 | -100.0% |
CLOSED
|
— | $— | 2023 Q4 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
U
UNITY SOFTWARE ...
|
Technology | 0.00% | 0.26% |
Sold All 😨
(Was: #72) |
0.0 | -80,000 | -100.0% |
CLOSED
|
— | $— | 2020 Q3 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
RXST
RXSIGHT INC
|
Healthcare | 0.00% | 0.26% |
Sold All 😨
(Was: #73) |
0.0 | -354,907 | -100.0% |
CLOSED
|
— | $— | 2023 Q2 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
NTSK
NETSKOPE INC
|
Technology | 0.00% | 0.21% |
Sold All 😨
(Was: #74) |
0.0 | -114,000 | -100.0% |
CLOSED
|
— | $— | 2025 Q3 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
HTFL
HEARTFLOW INC
|
Healthcare | 0.00% | 0.19% |
Sold All 😨
(Was: #75) |
0.0 | -69,000 | -100.0% |
CLOSED
|
— | $— | 2025 Q3 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
FND
FLOOR & DECOR H...
|
Consumer Cyclical | 0.00% | 0.18% |
Sold All 😨
(Was: #76) |
0.0 | -30,000 | -100.0% |
CLOSED
|
— | $— | 2017 Q2 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
INFY
PUT
INFOSYS LTD
|
PUT Option | 0.00% | 0.13% |
Sold All 😨
(Was: #78) |
0.0 | -1,000 | -100.0% |
CLOSED
|
— | $— | 2025 Q3 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
RARE
CALL
ULTRAGENYX PHAR...
|
CALL Option | 0.00% | 0.12% |
Sold All 😨
(Was: #80) |
0.0 | -500 | -100.0% |
CLOSED
|
— | $— | 2015 Q2 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
ZURA
ZURA BIO LTD
|
Healthcare | 0.00% | 0.10% |
Sold All 😨
(Was: #82) |
0.0 | -276,000 | -100.0% |
CLOSED
|
— | $— | 2025 Q3 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
IBM
INTERNATIONAL B...
|
Technology | 0.00% | 0.06% |
Sold All 😨
(Was: #83) |
0.0 | -2,708 | -100.0% |
CLOSED
|
— | $— | 2025 Q3 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
CAI
CARIS LIFE SCIE...
|
Healthcare | 0.00% | 0.06% |
Sold All 😨
(Was: #84) |
0.0 | -25,000 | -100.0% |
CLOSED
|
— | $— | 2025 Q2 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) | |||
|
STAA
STAAR SURGICAL ...
|
Healthcare | 0.00% | 0.04% |
Sold All 😨
(Was: #86) |
0.0 | -16,400 | -100.0% |
CLOSED
|
— | $— | 2023 Q2 | 13F Filing | 2025-12-31 | 2026-02-14 (Est.) |
Showing 1-25 of 121 holdings