2026 Q2 Portfolio Activity
In 2026 Q2, Atika Capital Management LLC maintained a portfolio of 105 distinct positions. The most significant new addition was INVESCO QQQ TR, now representing 4.84% of the total fund value. They heavily accumulated shares in SEAGATE TECHNOLOGY HLDNGS PL, increasing the position by 49.3%. Conversely, Atika Capital Management LLC completely exited their position in ISHARES TR.
Position History
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Total Positions
105
Quarter
2026 Q2
Top Holding
VRT (14.7%)
Top 10 Concentration
50.3%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-50 of 105
Atika Capital Management LLC Full Holdings List — 2026 Q2
| 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
VRT
VERTIV HOLDINGS...
|
Industrials | 14.66% | 20.96% |
#1
Prev: #1
|
7.0 |
—
|
no change | no change |
P
S
|
666,100 | $223,023,601 | 2023 Q2 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
XBI
PUT
SPDR SERIES TRU...
|
PUT Option | 5.85% | 6.78% |
#2
Prev: #2
|
6.3 |
—
|
1,400 | 33.1% |
P
S
|
5,625 | $89,015,625 | 2016 Q3 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
STX
SEAGATE TECHNOL...
|
Technology | 5.07% | 2.63% |
#3
5
Prev: #8
|
5.5 |
—
|
26,365 | 49.3% |
P
S
|
79,865 | $77,069,725 | 2025 Q3 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
QQQ
PUT
INVESCO QQQ TR
|
PUT Option | 4.84% | — |
#4
Prev: #—
|
5.9 |
—
|
1,000 | — |
NEW
|
1,000 | $73,640,000 | 2013 Q4 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
GEV
PUT
GE VERNOVA INC
|
PUT Option | 3.86% | — |
#5
Prev: #—
|
5.5 |
—
|
500 | — |
NEW
|
500 | $58,743,000 | 2024 Q3 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
AMD
ADVANCED MICRO ...
|
Technology | 3.65% | — |
#6
Prev: #—
|
5.0 |
—
|
95,500 | — |
NEW
|
95,500 | $55,476,904 | 2023 Q1 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
AMZN
CALL
AMAZON COM INC
|
CALL Option | 3.48% | — |
#7
Prev: #—
|
4.9 |
—
|
2,220 | — |
NEW
|
2,220 | $52,911,480 | 2015 Q4 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
LLY
ELI LILLY & CO
|
Healthcare | 3.24% | 4.75% |
#8
5
Prev: #3
|
2.3 |
—
|
no change | no change |
P
S
|
41,100 | $49,296,573 | 2015 Q2 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
QQQ
CALL
INVESCO QQQ TR
|
CALL Option | 3.19% | — |
#9
Prev: #—
|
4.8 |
—
|
660 | — |
NEW
|
660 | $48,602,400 | 2013 Q4 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
INTC
INTEL CORP
|
Technology | 2.42% | — |
#10
Prev: #—
|
4.5 |
—
|
264,000 | — |
NEW
|
264,000 | $36,862,320 | 2023 Q3 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
MU
PUT
MICRON TECHNOLO...
|
PUT Option | 2.28% | — |
#11
Prev: #—
|
4.4 |
—
|
300 | — |
NEW
|
300 | $34,623,300 | 2025 Q1 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
SATS
ECHOSTAR CORP
|
Communication Services | 2.21% | 2.68% |
#12
5
Prev: #7
|
3.9 |
—
|
149,400 | 82.1% |
P
S
|
331,400 | $33,637,101 | 2024 Q4 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
SMH
PUT
VANECK ETF TRUS...
|
PUT Option | 2.20% | 3.47% |
#13
9
Prev: #4
|
0.9 |
—
|
-210 | -29.2% |
P
S
|
510 | $33,450,390 | 2026 Q1 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
GH
GUARDANT HEALTH...
|
Healthcare | 1.78% | 1.06% |
#14
14
Prev: #28
|
3.7 |
—
|
90,000 | 98.9% |
P
S
|
181,000 | $27,155,430 | 2019 Q1 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
IGV
PUT
ISHARES TR
|
PUT Option | 1.62% | — |
#15
Prev: #—
|
4.1 |
—
|
2,720 | — |
NEW
|
2,720 | $24,643,200 | 2026 Q2 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
CIEN
CIENA CORP
|
Technology | 1.57% | 2.13% |
#16
4
Prev: #12
|
2.6 |
—
|
5,117 | 11.7% |
P
S
|
48,768 | $23,923,629 | 2025 Q3 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
ISRG
INTUITIVE SURGI...
|
Healthcare | 1.50% | 3.31% |
#17
12
Prev: #5
|
1.6 |
—
|
no change | no change |
P
S
|
57,216 | $22,753,659 | 2016 Q2 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
BTI
CALL
BRITISH AMERN T...
|
CALL Option | 1.34% | — |
#18
Prev: #—
|
4.0 |
—
|
3,300 | — |
NEW
|
3,300 | $20,380,800 | 2026 Q2 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
IBIT
PUT
ISHARES BITCOIN...
|
PUT Option | 1.31% | — |
#19
Prev: #—
|
4.0 |
—
|
6,000 | — |
NEW
|
6,000 | $19,974,000 | 2025 Q4 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
VPG
VISHAY PRECISIO...
|
Technology | 1.16% | — |
#20
Prev: #—
|
4.0 |
—
|
118,000 | — |
NEW
|
118,000 | $17,689,380 | 2026 Q2 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
MRVL
MARVELL TECHNOL...
|
Technology | 1.14% | — |
#21
Prev: #—
|
4.0 |
—
|
58,000 | — |
NEW
|
58,000 | $17,277,620 | 2024 Q1 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
RKLB
ROCKET LAB CORP
|
Industrials | 1.13% | 0.69% |
#22
19
Prev: #41
|
3.5 |
—
|
83,000 | 96.5% |
P
S
|
169,000 | $17,178,851 | 2025 Q4 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
WDC
WESTERN DIGITAL...
|
Technology | 1.11% | 1.28% |
#23
Prev: #23
|
0.4 |
—
|
-11,240 | -29.8% |
P
S
|
26,477 | $16,911,389 | 2026 Q1 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
RVMD
REVOLUTION MEDI...
|
Healthcare | 1.08% | — |
#24
Prev: #—
|
3.9 |
—
|
88,000 | — |
NEW
|
88,000 | $16,480,639 | 2026 Q2 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
N/A
ASCENDIS PHARMA...
|
|
Unknown | 1.07% | — |
#25
Prev: #—
|
3.9 |
—
|
61,000 | — |
NEW
|
61,000 | $16,269,920 | — | 13F Filing | 2026-06-30 | 2026-08-13 | ||
|
DNTH
DIANTHUS THERAP...
|
Healthcare | 1.06% | 1.36% |
#26
4
Prev: #22
|
2.9 |
—
|
36,200 | 28.1% |
P
S
|
165,000 | $16,084,201 | 2025 Q4 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
N/A
PUT
ROUNDHILL ETF T...
|
|
PUT Option | 1.02% | — |
#27
Prev: #—
|
3.9 |
—
|
2,100 | — |
NEW
|
2,100 | $15,508,500 | — | 13F Filing | 2026-06-30 | 2026-08-13 | ||
|
AXSM
AXSOME THERAPEU...
|
Healthcare | 1.01% | — |
#28
Prev: #—
|
3.9 |
—
|
63,000 | — |
NEW
|
63,000 | $15,420,511 | 2022 Q2 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
TEVA
TEVA PHARMACEUT...
|
Healthcare | 0.98% | 1.80% |
#29
13
Prev: #16
|
0.9 |
—
|
-37,000 | -7.8% |
P
S
|
440,000 | $14,907,200 | 2015 Q1 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
MTZ
MASTEC INC
|
Industrials | 0.97% | 2.33% |
#30
21
Prev: #9
|
0.4 |
—
|
-22,136 | -38.4% |
P
S
|
35,500 | $14,770,130 | 2024 Q4 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
SN
SHARKNINJA INC
|
Consumer Cyclical | 0.88% | — |
#31
Prev: #—
|
3.9 |
—
|
88,000 | — |
NEW
|
88,000 | $13,399,761 | 2025 Q2 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
NFLX
NETFLIX INC.
|
Communication Services | 0.84% | 2.17% |
#32
21
Prev: #11
|
1.3 |
—
|
no change | no change |
P
S
|
180,000 | $12,852,000 | 2013 Q4 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
CW
CURTISS WRIGHT ...
|
Industrials | 0.80% | 1.11% |
#33
6
Prev: #27
|
2.8 |
—
|
3,000 | 23.1% |
P
S
|
16,000 | $12,124,160 | 2025 Q2 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
KYMR
KYMERA THERAPEU...
|
Healthcare | 0.78% | — |
#34
Prev: #—
|
3.8 |
—
|
104,000 | — |
NEW
|
104,000 | $11,925,681 | 2024 Q1 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
STUB
CALL
STUBHUB HLDGS I...
|
CALL Option | 0.76% | — |
#35
Prev: #—
|
3.8 |
—
|
9,000 | — |
NEW
|
9,000 | $11,583,000 | 2026 Q2 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
SITM
SITIME CORP
|
Technology | 0.74% | 0.64% |
#36
8
Prev: #44
|
0.8 |
—
|
195 | 1.3% |
P
S
|
15,000 | $11,183,400 | 2026 Q1 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
TWST
TWIST BIOSCIENC...
|
Healthcare | 0.73% | — |
#37
Prev: #—
|
3.8 |
—
|
108,000 | — |
NEW
|
108,000 | $11,111,040 | 2026 Q2 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
REAL
THE REALREAL IN...
|
Consumer Cyclical | 0.73% | 0.51% |
#38
10
Prev: #48
|
3.3 |
—
|
488,945 | 108.4% |
P
S
|
940,000 | $11,082,601 | 2024 Q4 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
COGT
COGENT BIOSCIEN...
|
Healthcare | 0.69% | 1.42% |
#39
19
Prev: #20
|
0.8 |
—
|
-21,200 | -7.2% |
P
S
|
272,000 | $10,526,400 | 2025 Q4 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
BWXT
BWX TECHNOLOGIE...
|
Industrials | 0.69% | 2.12% |
#40
27
Prev: #13
|
0.3 |
—
|
-28,550 | -34.6% |
P
S
|
54,000 | $10,511,101 | 2022 Q2 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
AMZN
AMAZON COM INC
|
Consumer Cyclical | 0.69% | 1.14% |
#41
17
Prev: #24
|
0.8 |
—
|
300 | 0.7% |
P
S
|
44,000 | $10,486,959 | 2015 Q4 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
TBBB
BBB FOODS INC
|
Consumer Defensive | 0.68% | 0.42% |
#42
10
Prev: #52
|
3.3 |
—
|
154,782 | 162.6% |
P
S
|
250,000 | $10,417,500 | 2024 Q1 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
AXGN
AXOGEN INC
|
Healthcare | 0.67% | — |
#43
Prev: #—
|
3.8 |
—
|
221,000 | — |
NEW
|
221,000 | $10,207,991 | 2026 Q2 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
NOK
NOKIA CORP
|
Technology | 0.65% | — |
#44
Prev: #—
|
3.8 |
—
|
750,000 | — |
NEW
|
750,000 | $9,960,000 | 2026 Q2 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
ORKA
ORUKA THERAPEUT...
|
Healthcare | 0.63% | 1.42% |
#45
24
Prev: #21
|
0.3 |
—
|
-129,900 | -56.5% |
P
S
|
100,000 | $9,517,000 | 2026 Q1 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
TTMI
TTM TECHNOLOGIE...
|
Technology | 0.61% | 1.14% |
#46
21
Prev: #25
|
0.2 |
—
|
-43,000 | -46.2% |
P
S
|
50,000 | $9,351,000 | 2025 Q4 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
CRL
CHARLES RIV LAB...
|
Healthcare | 0.57% | — |
#47
Prev: #—
|
3.7 |
—
|
38,000 | — |
NEW
|
38,000 | $8,618,020 | 2026 Q2 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
ALKS
CALL
ALKERMES PLC
|
CALL Option | 0.55% | — |
#48
Prev: #—
|
3.7 |
—
|
1,600 | — |
NEW
|
1,600 | $8,384,000 | 2015 Q4 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
ACMR
ACM RESH INC
|
Technology | 0.53% | — |
#49
Prev: #—
|
3.7 |
—
|
63,000 | — |
NEW
|
63,000 | $7,994,069 | 2026 Q2 | 13F Filing | 2026-06-30 | 2026-08-13 | |||
|
ROIV
ROIVANT SCIENCE...
|
Healthcare | 0.50% | — |
#50
Prev: #—
|
3.7 |
—
|
217,000 | — |
NEW
|
217,000 | $7,679,630 | 2022 Q4 | 13F Filing | 2026-06-30 | 2026-08-13 |
Showing 1-50 of 105 holdings