Castleark Management 13F annual report
Andrew Henderson
Updated on March 15, 2026
11.05%
371,940
9.80%
594,305
53.49%
198,838
17.79%
171,657
7.00%
521,420
47.33%
109,630
155.14%
442,850
26,977.01%
164,899
Opened
447,010
44.28%
81,085
27.78%
183,775
229.14%
451,050
1.09%
883,409
10.97%
101,048
1,004.37%
643,850
36,794.12%
125,440
32.87%
53,495
8,398.33%
101,980
65.37%
55,045
9.36%
43,310
270.42%
1,189,260
Opened
160,370
19.75%
36,465
Opened
36,770
Opened
134,740
25.43%
354,140
Opened
222,650
Opened
613,760
1,477.06%
53,620
Opened
395,743
42.18%
48,200
Opened
168,760
73.29%
18,080
Opened
77,480
Opened
29,300
62.43%
32,320
9.13%
50,900
440.61%
105,960
Opened
157,700
22.46%
206,700
2,251.35%
130,970
Opened
121,780
540.79%
87,660
Opened
106,440
12.58%
44,970
Opened
51,730
18.82%
224,690
Opened
486,610
Opened
46,050
Opened
51,250
Opened
104,420
Opened
275,370
Opened
48,260
Opened
118,650
33.99%
16,440
Opened
213,330
Opened
50,840
Opened
50,450
Opened
25,780
Opened
36,140
46.76%
190,260
21.93%
197,396
Opened
97,390
Opened
79,620
Opened
166,360
Opened
81,410
Opened
228,010
30.14%
77,684
295.45%
222,480
Opened
84,480
Opened
288,590
Opened
133,260
Opened
44,540
33.55%
72,320
Opened
73,060
15.29%
193,080
Opened
76,510
Opened
267,520
24.55%
378,840
Opened
214,930
253.14%
186,738
Opened
77,070
Opened
340,268
Opened
70,690
Opened
196,297
24.80%
48,820
108.86%
76,380
Opened
30,200
Opened
112,190
Opened
148,160
51.06%
119,870
Opened
53,790
Opened
376,370
41.06%
127,750
Opened
26,710
Opened
46,040
Opened
77,950
Opened
43,370
29.24%
34,840
Opened
155,610
Opened
70,790
Opened
16,600
Opened
76,610
13.19%
129,642
15.05%
27,890
Opened
55,236
Opened
85,740
Opened
15,980
61.27%
73,226
Opened
194,229
Opened
68,910
Opened
29,500
Opened
117,260
Opened
117,200
902.37%
25,360
No change
276,340
Opened
53,340
Opened
108,430
Opened
67,020
1,283.76%
119,280
Opened
47,720
16.19%
73,900
No change
71,800
Opened
66,980
115.75%
57,615
Opened
84,770
Opened
70,060
Opened
191,780
31.91%
126,800
Opened
116,020
Opened
40,530
Opened
271,040
46.17%
54,700
Opened
153,042
Opened
589,010
252.43%
19,965
22.72%
317,860
Opened
19,170
Opened
13,575
Opened
56,630
Opened
127,090
Opened
30,260
Opened
77,160
Opened
45,570
Opened
544,088
Opened
43,410
Opened
49,050
24.55%
93,321
89.62%
388,800
38.45%
16,539
29.36%
17,440
79.37%
14,125
40.34%
14,062
Opened
95,140
Opened
51,820
Opened
39,182
48.85%
13,696
Opened
28,950
80.68%
5,460
Opened
257,750
65.18%
83,830
16.58%
20,530
Opened
35,540
43.05%
39,050
No change
2,800
31.66%
18,020
Opened
9,220
Opened
27,370
165.26%
78,490
Opened
72,720
169.86%
116,310
24.55%
26,124
Opened
88,490
68.34%
76,230
78.38%
4,620
Opened
11,420
No change
6,700
No change
4,040
Opened
4,718
No change
5,660
10.99%
37,825
33.21%
5,450
Opened
2,790
30.93%
14,880
156.81%
32,345
Opened
19,100
No change
8,440
90.76%
3,675
25.28%
25,570
22.26%
3,240
Opened
17,020
No change
6,950
3.25%
13,030
35.01%
23,910
Opened
59,530
98.18%
2,800
No change
2,300
14.85%
7,310
96.84%
3,400
Opened
3,430
14.29%
4,960
No change
770
Opened
9,360
Opened
12,640
43.39%
50,230
Opened
37,500
96.29%
2,900
No change
3,800
Opened
3,850
Opened
13,410
12.50%
2,380
98.17%
9,360
Opened
27,120
49.97%
5,774
Opened
4,750
No change
4,620
No change
5,332
88.36%
2,675
Opened
7,390
No change
740
50.19%
1,290
50.03%
9,110
Opened
4,690
Opened
830
43.12%
1,240
No change
1,000
No change
730
No change
2,000
No change
5,574
66.94%
1,820
No change
6,500
99.52%
2,000
No change
3,397
No change
3,460
76.26%
3,570
50.00%
3,240
No change
770
61.52%
5,910
50.02%
10,962
No change
3,844
50.23%
1,080
50.00%
2,660
No change
2,160
75.06%
2,170
No change
860
50.16%
1,560
No change
2,200
50.04%
5,890
No change
720
No change
580
50.02%
14,890
49.91%
1,465
Closed
124,800
Closed
108,395
No change
1,560
No change
360
No change
480
Closed
448,640
Closed
421,495
No change
770
Closed
174,935
Closed
364,000
Opened
1,114
49.98%
1,171
Closed
866,900
No change
720
No change
140
No change
1,150
Closed
86,280
Closed
185,420
Closed
278,164
Closed
137,410
Closed
51,200
Closed
894,210
Closed
35,054
No change
2,689
Closed
117,030
Closed
122,570
Closed
351,650
Closed
162,095
Closed
46,140
Closed
102,340
Closed
1,058,900
Closed
118,550
Closed
54,040
Closed
167,826
Closed
54,254
Closed
40,520
Closed
53,890
Closed
94,780
Closed
197,680
Closed
43,850
Closed
64,310
Closed
86,820
Closed
86,320
Closed
33,120
Closed
170,305
Closed
435,700
Closed
64,630
Closed
50,970
Closed
52,770
Closed
60,175
Closed
105,180
Closed
134,700
Closed
154,220
Closed
225,798
Closed
155,540
Closed
310,099
Closed
41,649
Closed
118,245
Closed
228,410
Closed
114,060
Closed
60,600
Closed
295,300
Closed
250,460
Closed
61,854
Closed
67,570
Closed
36,100
Closed
477,640
Closed
141,770
Closed
62,900
Closed
118,570
Closed
144,368
Closed
127,860
Closed
57,890
Closed
115,483
Closed
299,578
Closed
206,630
Closed
127,460
Closed
79,357
Closed
138,347
Closed
55,364
Closed
150,670
Closed
373,190
Closed
130,960
Closed
71,950
Closed
83,210
Closed
89,452
Closed
66,900
Closed
45,195
Closed
11,246
Closed
34,440
Closed
60,455
Closed
82,880
Closed
20,802
Closed
34,320
Closed
36,747
Closed
57,390
Closed
12,985
Closed
34,100
Closed
42,890
Closed
72,740
Closed
74,710
Closed
32,140
Closed
55,990
Closed
27,400
Closed
22,000
Closed
24,560
Closed
35,268
Closed
38,965
Closed
65,310
Closed
37,500
50.00%
3,770
Closed
38,940
Closed
37,240
Closed
22,450
Closed
52,000
Closed
60,630
Closed
14,840
Closed
32,460
Closed
10,910
Closed
35,410
Closed
4,970
Closed
90,470
Closed
39,240
Closed
2,460
Closed
30,460
Closed
6,505
Closed
2,410
Closed
4,910
Closed
2,150
Closed
2,172
Closed
9,550
Closed
4,950
Closed
7,910
Closed
6,820
Closed
811