Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| 1 |
Boeing
BA
|
+$49.5M |
| 2 |
Pinduoduo
PDD
|
+$45.3M |
| 3 |
Microsoft
MSFT
|
+$42.5M |
| 4 |
Apple
AAPL
|
+$33.3M |
| 5 |
Direxion Daily Semiconductor Bull 3X Shares
SOXL
|
+$25.4M |
Top Sells
| 1 |
Broadcom
AVGO
|
+$95.4M |
| 2 |
Citigroup
C
|
+$57.9M |
| 3 |
Pfizer
PFE
|
+$55.9M |
| 4 |
TSMC
TSM
|
+$40.4M |
| 5 |
Starbucks
SBUX
|
+$40.4M |
Sector Composition
| 1 | Technology | 23.11% |
| 2 | Consumer Discretionary | 16.53% |
| 3 | Healthcare | 8.58% |
| 4 | Industrials | 7.58% |
| 5 | Financials | 7.29% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
451
Halliburton
HAL
$19B
| $926K | ﹤0.01% |
+31,896
| New | +$926K |
|
|
MFA
452
MFA Financial
MFA
$1.05B
| $922K | ﹤0.01% |
72,502
+56,678
| +358% | +$721K |
|
|
HUT
453
Hut 8
HUT
$3.27B
| $921K | ﹤0.01% |
75,158
+35,735
| +91% | +$438K |
|
454
Pool Corp
POOL
$12B
| $920K | ﹤0.01% |
2,443
-3,005
| -55% | -$1.13M |
|
455
Teleflex
TFX
$5.75B
| $919K | ﹤0.01% |
3,718
+1,549
| +71% | +$383K |
|
456
Gold Fields
GFI
$33.3B
| $917K | ﹤0.01% |
59,782
-451,695
| -88% | -$6.93M |
|
457
Keysight
KEYS
$29.3B
| $916K | ﹤0.01% |
5,766
-3,866
| -40% | -$614K |
|
458
ProShares Ultra Bloomberg Crude Oil
UCO
$358M
| $906K | ﹤0.01% |
35,655
+15,368
| +76% | +$391K |
|
459
Academy Sports + Outdoors
ASO
$3.23B
| $896K | ﹤0.01% |
15,356
+4,394
| +40% | +$256K |
|
460
Ormat Technologies
ORA
$5.51B
| $896K | ﹤0.01% |
11,653
-1,453
| -11% | -$112K |
|
461
Goodyear
GT
$2.42B
| $892K | ﹤0.01% |
100,897
+70,529
| +232% | +$624K |
|
462
Cipher Mining
CIFR
$3.87B
| $890K | ﹤0.01% |
230,207
-218,097
| -49% | -$843K |
|
463
YieldMax COIN Option Income Strategy ETF
CONY
$1.41B
| $890K | ﹤0.01% |
66,471
+24,342
| +58% | +$326K |
|
464
Fastly
FSLY
$1.13B
| $888K | ﹤0.01% |
117,329
-61,933
| -35% | -$469K |
|
465
Melco Resorts & Entertainment
MLCO
$3.76B
| $887K | ﹤0.01% |
113,883
+22,258
| +24% | +$173K |
|
466
Procore
PCOR
$10.6B
| $884K | ﹤0.01% |
+14,325
| New | +$884K |
|
467
Rockwell Automation
ROK
$39B
| $881K | ﹤0.01% |
3,282
-1,157
| -26% | -$311K |
|
468
GigaCloud Technology
GCT
$1.1B
| $877K | ﹤0.01% |
+38,201
| New | +$877K |
|
469
US Foods
USFD
$17.6B
| $877K | ﹤0.01% |
14,274
-20,155
| -59% | -$1.24M |
|
470
SharkNinja
SN
$16.4B
| $875K | ﹤0.01% |
+8,053
| New | +$875K |
|
471
Teekay
TK
$729M
| $872K | ﹤0.01% |
94,850
+90,002
| +1,856% | +$827K |
|
472
Energy Fuels
UUUU
$3.01B
| $865K | ﹤0.01% |
157,617
+108,955
| +224% | +$598K |
|
473
Blue Owl Capital
OBDC
$7.26B
| $861K | ﹤0.01% |
+59,150
| New | +$861K |
|
474
Helix Energy Solutions
HLX
$923M
| $858K | ﹤0.01% |
+77,387
| New | +$858K |
|
475
iShares MSCI Canada ETF
EWC
$3.25B
| $853K | ﹤0.01% |
+20,546
| New | +$853K |
|