2026 Q2 Portfolio Activity
In 2026 Q2, CSS LLC/IL maintained a portfolio of 1278 distinct positions. The most significant new addition was MICROCHIP TECHNOLOGY INC., now representing 1.67% of the total fund value. They heavily accumulated shares in LUMENTUM HLDGS INC, increasing the position by 93785.0%. Conversely, CSS LLC/IL completely exited their position in LUMENTUM HLDGS INC.
Position History
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Total Positions
1278
Quarter
2026 Q2
Top Holding
N/A (9.6%)
Top 10 Concentration
35.0%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-50 of 1278
CSS LLC/IL 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
N/A
LUMENTUM HLDGS ...
|
|
Bond/Debt | 9.56% | 10.37% |
#1
Prev: #1
|
6.3 |
—
|
-2,910,000 | -7.2% |
P
S
|
37,554,000 | $245,587,763 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
HPE/PRC
HEWLETT PACKARD...
|
Unknown | 5.81% | 0.36% |
#2
48
Prev: #50
|
6.8 |
—
|
1,161,821 | 1014.7% |
P
S
|
1,276,322 | $149,321,378 | 2024 Q3 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
N/A
ECHOSTAR CORP
|
|
Bond/Debt | 5.35% | 7.02% |
#3
1
Prev: #2
|
5.1 |
—
|
3,000,000 | 7.3% |
P
S
|
43,925,753 | $137,438,497 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
APO/PRA
APOLLO GLOBAL M...
|
Unknown | 3.22% | 0.78% |
#4
17
Prev: #21
|
4.8 |
—
|
1,084,181 | 391.0% |
P
S
|
1,361,499 | $82,814,266 | 2024 Q3 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
BAC/PRL
BANK OF AMER CO...
|
Preferred | 2.46% | 0.59% |
#5
27
Prev: #32
|
4.5 |
—
|
40,058 | 388.4% |
P
S
|
50,372 | $63,279,573 | 2018 Q1 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
N/A
WOLFSPEED INC
|
|
Bond/Debt | 2.11% | 0.65% |
#6
23
Prev: #29
|
3.3 |
—
|
4,517,000 | 48.8% |
P
S
|
13,773,940 | $54,187,493 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
N/A
SUPER MICRO COM...
|
|
Unknown | 1.76% | — |
#7
Prev: #—
|
4.2 |
—
|
878,227 | — |
NEW
|
878,227 | $45,262,151 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
CORZW
CORE SCIENTIFIC...
|
Unknown | 1.72% | 0.87% |
#8
6
Prev: #14
|
2.7 |
—
|
268,373 | 12.9% |
P
S
|
2,351,492 | $44,208,050 | 2024 Q2 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
MCHPP
MICROCHIP TECHN...
|
Technology | 1.67% | — |
#9
Prev: #—
|
4.2 |
—
|
558,552 | — |
NEW
|
558,552 | $42,957,787 | 2026 Q2 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
N/A
CLOUDFLARE INC
|
|
Bond/Debt | 1.31% | 0.75% |
#10
13
Prev: #23
|
3.5 |
—
|
12,700,000 | 94.7% |
P
S
|
26,112,000 | $33,548,488 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
N/A
AKAMAI TECHNOLO...
|
|
Bond/Debt | 1.15% | 0.86% |
#11
5
Prev: #16
|
3.5 |
—
|
9,119,000 | 58.2% |
P
S
|
24,797,000 | $29,570,943 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
GME
PUT
GAMESTOP CORP
|
PUT Option | 1.06% | 1.34% |
#12
5
Prev: #7
|
0.9 |
—
|
16,200 | 1.3% |
P
S
|
1,230,200 | $27,162,816 | 2019 Q2 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
ALB/PRA
ALBEMARLE CORP
|
Unknown | 1.02% | 0.86% |
#13
2
Prev: #15
|
3.4 |
—
|
220,162 | 87.9% |
P
S
|
470,583 | $26,081,827 | 2025 Q4 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
N/A
CENTERPOINT ENE...
|
|
Bond/Debt | 0.98% | 1.19% |
#14
5
Prev: #9
|
1.4 |
—
|
no change | no change |
P
S
|
21,000,000 | $25,291,287 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
N/A
EQUINOX GOLD CO...
|
|
Bond/Debt | 0.98% | 0.92% |
#15
2
Prev: #13
|
3.4 |
—
|
6,959,000 | 87.7% |
P
S
|
14,895,000 | $25,071,175 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
BA/PRA
BOEING CO
|
Preferred | 0.92% | — |
#16
Prev: #—
|
3.9 |
—
|
349,354 | — |
NEW
|
349,354 | $23,634,078 | 2026 Q2 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
N/A
TRANSOCEAN INC
|
|
Unknown | 0.91% | 2.37% |
#17
12
Prev: #5
|
0.4 |
—
|
-9,250,000 | -37.9% |
P
S
|
15,168,000 | $23,494,185 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
EP/PRC
EL PASO ENERGY ...
|
Preferred | 0.88% | 0.55% |
#18
18
Prev: #36
|
3.4 |
—
|
219,757 | 96.9% |
P
S
|
446,461 | $22,586,641 | 2024 Q3 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
RSP
INVESCO EXCHANG...
|
Unknown | 0.86% | 0.95% |
#19
8
Prev: #11
|
0.8 |
—
|
590 | 0.6% |
P
S
|
104,072 | $22,143,400 | 2023 Q4 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
VOO
VANGUARD INDEX ...
|
ETF | 0.86% | 0.92% |
#20
8
Prev: #12
|
1.3 |
—
|
no change | no change |
P
S
|
32,210 | $22,122,150 | 2023 Q4 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
KMI
PUT
KINDER MORGAN I...
|
PUT Option | 0.85% | — |
#21
Prev: #—
|
3.8 |
—
|
678,900 | — |
NEW
|
678,900 | $21,704,433 | 2013 Q4 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
N/A
IREN LIMITED
|
|
Bond/Debt | 0.83% | — |
#22
Prev: #—
|
3.8 |
—
|
6,000,000 | — |
NEW
|
6,000,000 | $21,204,420 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
N/A
DIGITALOCEAN HL...
|
|
Bond/Debt | 0.76% | — |
#23
Prev: #—
|
3.8 |
—
|
17,243,000 | — |
NEW
|
17,243,000 | $19,526,835 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
N/A
PTC THERAPEUTIC...
|
|
Bond/Debt | 0.73% | 0.18% |
#24
70
Prev: #94
|
3.3 |
—
|
9,119,000 | 316.3% |
P
S
|
12,002,000 | $18,640,606 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
N/A
SNOWFLAKE INC
|
|
Bond/Debt | 0.64% | 0.76% |
#25
3
Prev: #22
|
0.3 |
—
|
-3,700,000 | -28.5% |
P
S
|
9,300,000 | $16,473,536 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
N/A
PUT
XEROX HOLDINGS ...
|
|
PUT Option | 0.62% | 0.44% |
#26
17
Prev: #43
|
0.2 |
—
|
-2,060,000 | -28.8% |
P
S
|
5,100,000 | $15,963,000 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
WDC
WESTERN DIGITAL...
|
Technology | 0.62% | 0.33% |
#27
30
Prev: #57
|
0.7 |
—
|
-500 | -2.0% |
P
S
|
24,933 | $15,925,206 | 2016 Q2 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
N/A
GAMESTOP CORP
|
|
Bond/Debt | 0.59% | — |
#28
Prev: #—
|
3.7 |
—
|
14,944,000 | — |
NEW
|
14,944,000 | $15,179,711 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
IAU
ISHARES GOLD TR
|
ETF | 0.59% | 0.84% |
#29
11
Prev: #18
|
1.2 |
—
|
no change | no change |
P
S
|
200,040 | $15,105,021 | 2023 Q4 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
KIM/PRN
KIMCO REALTY CO...
|
Unknown | 0.58% | 0.68% |
#30
4
Prev: #26
|
0.7 |
—
|
33 | 0.0% |
P
S
|
237,147 | $14,983,445 | 2024 Q1 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
SPY
CALL
STATE STR SPDR ...
|
CALL Option | 0.55% | 0.70% |
#31
6
Prev: #25
|
0.7 |
—
|
-3,500 | -15.6% |
P
S
|
19,000 | $14,188,630 | 2014 Q1 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
N/A
ALPHABET INC
|
|
Unknown | 0.52% | — |
#32
Prev: #—
|
3.7 |
—
|
266,589 | — |
NEW
|
266,589 | $13,381,515 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
SPY
STATE STR SPDR ...
|
ETF | 0.50% | — |
#33
Prev: #—
|
3.7 |
—
|
17,269 | — |
NEW
|
17,269 | $12,895,971 | 2014 Q1 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
PEN
PENUMBRA INC
|
Healthcare | 0.48% | 0.57% |
#34
Prev: #34
|
2.2 |
—
|
2,600 | 7.2% |
P
S
|
38,740 | $12,232,155 | 2026 Q1 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
IONS
IONIS PHARMACEU...
|
Healthcare | 0.47% | 0.28% |
#35
30
Prev: #65
|
3.2 |
—
|
73,196 | 92.5% |
P
S
|
152,289 | $12,074,995 | 2014 Q1 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
N/A
BRIDGEBIO PHARM...
|
|
Bond/Debt | 0.47% | 0.82% |
#36
17
Prev: #19
|
0.2 |
—
|
-2,925,000 | -29.0% |
P
S
|
7,175,000 | $12,074,922 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
N/A
CELCUITY INC
|
|
Bond/Debt | 0.46% | 0.74% |
#37
13
Prev: #24
|
0.7 |
—
|
-1,000,000 | -15.8% |
P
S
|
5,310,000 | $11,943,008 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
N/A
HAEMONETICS COR...
|
|
Bond/Debt | 0.45% | 0.01% |
#38
753
Prev: #791
|
3.2 |
—
|
11,378,000 | 9326.2% |
P
S
|
11,500,000 | $11,638,678 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
PEN
PUT
PENUMBRA INC
|
PUT Option | 0.44% | 0.59% |
#39
6
Prev: #33
|
0.7 |
—
|
-1,100 | -3.0% |
P
S
|
36,100 | $11,398,575 | 2026 Q1 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
N/A
GUARDANT HEALTH...
|
|
Bond/Debt | 0.44% | 0.57% |
#40
5
Prev: #35
|
0.2 |
—
|
-2,500,000 | -35.6% |
P
S
|
4,514,000 | $11,344,422 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
N/A
MARA HOLDINGS I...
|
|
Bond/Debt | 0.43% | 0.67% |
#41
13
Prev: #28
|
0.2 |
—
|
-6,500,000 | -39.4% |
P
S
|
10,000,000 | $11,073,150 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
N/A
BROOKDALE SR LI...
|
|
Bond/Debt | 0.43% | 0.46% |
#42
Prev: #42
|
1.2 |
—
|
no change | no change |
P
S
|
5,632,000 | $11,047,602 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
N/A
ALNYLAM PHARMAC...
|
|
Bond/Debt | 0.42% | 1.14% |
#43
33
Prev: #10
|
0.2 |
—
|
-9,500,000 | -51.2% |
P
S
|
9,063,000 | $10,903,777 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
N/A
TRANSMEDICS GRO...
|
|
Bond/Debt | 0.42% | — |
#44
Prev: #—
|
3.7 |
—
|
10,000,000 | — |
NEW
|
10,000,000 | $10,861,980 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
N/A
ON SEMICONDUCTO...
|
|
Bond/Debt | 0.40% | 0.00% |
#45
823
Prev: #868
|
3.2 |
—
|
8,575,000 | 19488.6% |
P
S
|
8,619,000 | $10,364,149 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
N/A
OCEANHAWK ACQUI...
|
|
Unknown | 0.40% | — |
#46
Prev: #—
|
3.7 |
—
|
1,038,610 | — |
NEW
|
1,038,610 | $10,282,239 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
N/A
PPL CAP FDG INC
|
|
Bond/Debt | 0.40% | 0.17% |
#47
61
Prev: #108
|
3.2 |
—
|
6,006,000 | 201.4% |
P
S
|
8,988,000 | $10,197,569 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
N/A
FUTURECORP SPAC...
|
|
Unknown | 0.39% | — |
#48
Prev: #—
|
3.7 |
—
|
1,000,000 | — |
NEW
|
1,000,000 | $10,130,000 | — | 13F Filing | 2026-06-30 | 2026-08-14 | ||
|
EA
PUT
ELECTRONIC ARTS...
|
PUT Option | 0.38% | 0.04% |
#49
346
Prev: #395
|
3.2 |
—
|
43,800 | 1095.0% |
P
S
|
47,800 | $9,800,912 | 2021 Q1 | 13F Filing | 2026-06-30 | 2026-08-14 | |||
|
N/A
MARA HOLDINGS I...
|
|
Bond/Debt | 0.37% | 0.55% |
#50
13
Prev: #37
|
0.1 |
—
|
-3,466,000 | -26.8% |
P
S
|
9,467,000 | $9,525,023 | — | 13F Filing | 2026-06-30 | 2026-08-14 |
Showing 1-50 of 1278 holdings