2026 Q1 Portfolio Activity
In 2026 Q1, WHITEBOX ADVISORS LLC maintained a portfolio of 670 distinct positions. The most significant new addition was ISHARES TR, now representing 2.29% of the total fund value. They heavily accumulated shares in WESTERN DIGITAL CORP, increasing the position by 966330.3%. Conversely, WHITEBOX ADVISORS LLC completely exited their position in WESTERN DIGITAL CORP.
Position History
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Total Positions
670
Quarter
2026 Q1
Top Holding
N/A (18.0%)
Top 10 Concentration
49.9%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-50 of 670
WHITEBOX ADVISORS LLC 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
N/A
WESTERN DIGITAL...
|
|
Bond/Debt | 18.01% | 13.29% |
#1
Prev: #1
|
7.0 |
—
|
no change | no change |
P
S
|
204,400,000 | $1,463,136,080 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
N/A
LUMENTUM HLDGS ...
|
|
Bond/Debt | 8.81% | 5.35% |
#2
Prev: #2
|
6.0 |
—
|
no change | no change |
P
S
|
71,025,000 | $716,145,075 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
N/A
ECHOSTAR CORP
|
|
Bond/Debt | 4.49% | 2.60% |
#3
5
Prev: #8
|
5.8 |
—
|
47,260,000 | 86.0% |
P
S
|
102,197,086 | $365,058,211 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
SPY
PUT
STATE STR SPDR ...
|
PUT Option | 4.00% | 4.35% |
#4
1
Prev: #3
|
4.1 |
—
|
50,000 | 11.1% |
P
S
|
500,000 | $325,170,000 | 2005 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
N/A
LUMENTUM HLDGS ...
|
|
Bond/Debt | 2.79% | 1.88% |
#5
8
Prev: #13
|
2.1 |
—
|
-3,682,500 | -10.3% |
P
S
|
32,097,500 | $226,897,228 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
N/A
ALIBABA GROUP H...
|
|
Bond/Debt | 2.73% | 3.30% |
#6
2
Prev: #4
|
3.1 |
—
|
10,000,000 | 6.7% |
P
S
|
159,900,000 | $221,781,300 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
N/A
SPHERE ENTERTAI...
|
|
Bond/Debt | 2.67% | 2.59% |
#7
2
Prev: #9
|
1.6 |
—
|
-2,114,000 | -3.2% |
P
S
|
64,504,000 | $216,797,944 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
IWM
PUT
ISHARES TR
|
PUT Option | 2.29% | — |
#8
Prev: #—
|
4.4 |
—
|
750,000 | — |
NEW
|
750,000 | $186,000,000 | 2006 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
N/A
SNOWFLAKE INC
|
|
Bond/Debt | 2.15% | 2.75% |
#9
3
Prev: #6
|
2.9 |
—
|
17,500,000 | 14.0% |
P
S
|
142,807,000 | $174,738,645 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
N/A
SNOWFLAKE INC
|
|
Bond/Debt | 2.00% | 2.84% |
#10
5
Prev: #5
|
1.3 |
—
|
2,500,000 | 1.9% |
P
S
|
137,450,000 | $162,328,450 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
N/A
APPLIED DIGITAL...
|
|
Bond/Debt | 1.98% | 2.33% |
#11
1
Prev: #10
|
1.8 |
—
|
no change | no change |
P
S
|
60,800,000 | $161,241,600 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
GTLS
CHART INDS INC
|
Industrials | 1.93% | 1.64% |
#12
5
Prev: #17
|
3.3 |
—
|
198,886 | 35.5% |
P
S
|
758,887 | $156,899,887 | 2014 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
PEN
PENUMBRA INC
|
Healthcare | 1.80% | — |
#13
Prev: #—
|
4.2 |
—
|
445,001 | — |
NEW
|
445,001 | $146,124,978 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
NVDA
PUT
NVIDIA CORPORAT...
|
PUT Option | 1.72% | 2.65% |
#14
7
Prev: #7
|
0.7 |
—
|
-200,000 | -20.0% |
P
S
|
800,000 | $139,520,000 | 2011 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
N/A
TRIP COM GROUP ...
|
|
Bond/Debt | 1.68% | 2.06% |
#15
3
Prev: #12
|
2.7 |
—
|
13,900,000 | 11.8% |
P
S
|
131,732,000 | $136,311,270 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
WBS
WEBSTER FINL CO...
|
Financial Services | 1.64% | — |
#16
Prev: #—
|
4.2 |
—
|
1,925,001 | — |
NEW
|
1,925,001 | $133,633,569 | 2009 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
N/A
STRATEGY INC
|
|
Bond/Debt | 1.41% | 1.75% |
#17
2
Prev: #15
|
1.1 |
—
|
500,000 | 0.4% |
P
S
|
112,000,000 | $114,184,000 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
N/A
COINBASE GLOBAL...
|
|
Bond/Debt | 1.37% | 1.31% |
#18
1
Prev: #19
|
3.0 |
—
|
30,414,000 | 33.8% |
P
S
|
120,456,000 | $111,602,484 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
SMCI
PUT
SUPER MICRO COM...
|
PUT Option | 1.29% | 0.87% |
#19
11
Prev: #30
|
3.5 |
—
|
2,500,000 | 119.0% |
P
S
|
4,600,000 | $104,742,000 | 2014 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
N/A
CENTRUS ENERGY ...
|
|
Bond/Debt | 1.14% | 1.73% |
#20
4
Prev: #16
|
1.5 |
—
|
no change | no change |
P
S
|
45,600,000 | $92,476,800 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
LBRDK
LIBERTY BROADBA...
|
Communication Services | 0.91% | 1.02% |
#21
3
Prev: #24
|
0.9 |
—
|
1,000 | 0.1% |
P
S
|
1,477,741 | $74,330,372 | 2021 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
N/A
RIVIAN AUTOMOTI...
|
|
Bond/Debt | 0.91% | 1.03% |
#22
1
Prev: #23
|
2.4 |
—
|
12,500,000 | 19.3% |
P
S
|
77,237,000 | $73,969,875 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
N/A
STRATEGY INC
|
|
Bond/Debt | 0.88% | 0.94% |
#23
3
Prev: #26
|
2.4 |
—
|
5,000,000 | 6.2% |
P
S
|
86,050,000 | $71,800,120 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
N/A
JETBLUE AIRWAYS...
|
|
Bond/Debt | 0.86% | 1.17% |
#24
3
Prev: #21
|
0.8 |
—
|
-12,700,000 | -14.9% |
P
S
|
72,371,000 | $69,620,902 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
TSM
PUT
TAIWAN SEMICOND...
|
PUT Option | 0.83% | 0.86% |
#25
7
Prev: #32
|
1.3 |
—
|
no change | no change |
P
S
|
200,000 | $67,590,000 | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
N/A
UPSTART HLDGS I...
|
|
Bond/Debt | 0.78% | 1.25% |
#26
6
Prev: #20
|
0.8 |
—
|
-5,100,000 | -7.3% |
P
S
|
64,900,000 | $63,251,540 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
N/A
MARA HOLDINGS I...
|
|
Bond/Debt | 0.76% | 0.78% |
#27
6
Prev: #33
|
1.3 |
—
|
no change | no change |
P
S
|
69,850,000 | $61,607,700 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
IBIT
PUT
ISHARES BITCOIN...
|
PUT Option | 0.71% | 2.11% |
#28
17
Prev: #11
|
0.3 |
—
|
-1,500,000 | -50.0% |
P
S
|
1,500,000 | $57,630,000 | 2025 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
VAL
VALARIS LTD
|
Energy | 0.70% | — |
#29
Prev: #—
|
3.8 |
—
|
583,937 | — |
NEW
|
583,937 | $57,249,183 | 2011 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
TERN
TERNS PHARMACEU...
|
Healthcare | 0.65% | — |
#30
Prev: #—
|
3.8 |
—
|
1,000,001 | — |
NEW
|
1,000,001 | $52,720,053 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
TFPM
TRIPLE FLAG PRE...
|
Basic Materials | 0.65% | 0.72% |
#31
6
Prev: #37
|
0.8 |
—
|
-7,680 | -0.5% |
P
S
|
1,518,950 | $52,714,150 | 2022 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
NBIS
PUT
NEBIUS GROUP N....
|
PUT Option | 0.64% | — |
#32
Prev: #—
|
3.8 |
—
|
500,000 | — |
NEW
|
500,000 | $51,880,000 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
N/A
ENCORE CAP GROU...
|
|
Bond/Debt | 0.63% | 0.74% |
#33
3
Prev: #36
|
0.8 |
—
|
-6,750,000 | -14.2% |
P
S
|
40,762,000 | $51,258,215 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
AAPL
PUT
APPLE INC
|
PUT Option | 0.62% | — |
#34
Prev: #—
|
3.7 |
—
|
200,000 | — |
NEW
|
200,000 | $50,758,000 | 2011 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
MASI
MASIMO CORP
|
Healthcare | 0.59% | — |
#35
Prev: #—
|
3.7 |
—
|
270,001 | — |
NEW
|
270,001 | $48,025,078 | 2010 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
N/A
MARA HOLDINGS I...
|
|
Bond/Debt | 0.59% | 0.87% |
#36
7
Prev: #29
|
0.2 |
—
|
-22,000,000 | -29.7% |
P
S
|
52,000,000 | $47,658,000 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
GPOR
GULFPORT ENERGY...
|
Energy | 0.57% | 0.66% |
#37
1
Prev: #38
|
0.7 |
—
|
-5,000 | -2.2% |
P
S
|
219,627 | $46,466,484 | 2007 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
N/A
STRATEGY INC
|
|
Bond/Debt | 0.57% | 0.61% |
#38
2
Prev: #40
|
2.2 |
—
|
5,000,000 | 13.5% |
P
S
|
42,000,000 | $46,011,000 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
N/A
STRATEGY INC
|
|
Bond/Debt | 0.56% | — |
#39
Prev: #—
|
3.7 |
—
|
51,782,000 | — |
NEW
|
51,782,000 | $45,194,931 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
WBD
WARNER BROS DIS...
|
Communication Services | 0.55% | 0.16% |
#40
38
Prev: #78
|
3.2 |
—
|
1,215,000 | 303.7% |
P
S
|
1,615,001 | $44,347,927 | 2011 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
N/A
UPSTART HLDGS I...
|
|
Bond/Debt | 0.53% | 0.75% |
#41
6
Prev: #35
|
1.2 |
—
|
no change | no change |
P
S
|
60,730,000 | $42,959,054 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
N/A
MARA HOLDINGS I...
|
|
Bond/Debt | 0.52% | 0.48% |
#42
4
Prev: #46
|
2.2 |
—
|
8,000,000 | 19.1% |
P
S
|
49,950,000 | $42,301,406 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
N/A
ORACLE CORP
|
|
Unknown | 0.50% | — |
#43
Prev: #—
|
3.7 |
—
|
900,000 | — |
NEW
|
900,000 | $40,509,000 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
N/A
OMEROS CORP
|
|
Bond/Debt | 0.45% | 0.77% |
#44
10
Prev: #34
|
1.2 |
—
|
no change | no change |
P
S
|
18,033,000 | $36,353,351 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
MARA
PUT
MARA HOLDINGS I...
|
PUT Option | 0.44% | 0.49% |
#45
Prev: #45
|
2.2 |
—
|
500,000 | 12.9% |
P
S
|
4,369,200 | $35,652,672 | 2024 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
N/A
HERBALIFE LTD
|
|
Bond/Debt | 0.43% | 0.49% |
#46
2
Prev: #44
|
0.7 |
—
|
-3,000,000 | -9.3% |
P
S
|
29,321,000 | $34,965,293 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
CUK
CARNIVAL PLC
|
Consumer Cyclical | 0.41% | — |
#47
Prev: #—
|
3.7 |
—
|
1,300,036 | — |
NEW
|
1,300,036 | $33,501,928 | 2021 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
N/A
WOLFSPEED INC
|
|
Bond/Debt | 0.38% | 0.44% |
#48
4
Prev: #52
|
0.7 |
—
|
674,000 | 3.2% |
P
S
|
21,545,000 | $31,220,860 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
N/A
WAYFAIR INC
|
|
Bond/Debt | 0.38% | 0.93% |
#49
22
Prev: #27
|
0.2 |
—
|
-10,650,000 | -37.3% |
P
S
|
17,900,000 | $31,208,650 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
WBD
PUT
WARNER BROS DIS...
|
PUT Option | 0.37% | — |
#50
Prev: #—
|
3.6 |
—
|
1,100,000 | — |
NEW
|
1,100,000 | $30,206,000 | 2011 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 |
Showing 1-50 of 670 holdings