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 |
NVIDIA
NVDA
|
+$114M |
| 2 |
Citigroup
C
|
+$77M |
| 3 |
Broadcom
AVGO
|
+$53M |
| 4 |
Pinduoduo
PDD
|
+$49.7M |
| 5 |
Intel
INTC
|
+$44.5M |
Top Sells
| 1 |
Energy Select Sector SPDR Fund
XLE
|
+$92.5M |
| 2 |
Pfizer
PFE
|
+$67.5M |
| 3 |
Boeing
BA
|
+$66.7M |
| 4 |
Direxion Daily Semiconductor Bull 3X Shares
SOXL
|
+$44.9M |
| 5 |
PayPal
PYPL
|
+$44.4M |
Sector Composition
| 1 | Technology | 27.91% |
| 2 | Consumer Discretionary | 14.92% |
| 3 | Healthcare | 10.74% |
| 4 | Financials | 10.11% |
| 5 | Materials | 6.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
676
indie Semiconductor
INDI
$790M
| $427K | ﹤0.01% |
69,300
-15,901
| -19% | -$98K |
|
677
Harmony Gold Mining
HMY
$9.62B
| $426K | ﹤0.01% |
+46,470
| New | +$426K |
|
678
Amplify Alternative Harvest ETF
MJ
$178M
| $422K | ﹤0.01% |
10,605
+9,709
| +1,084% | +$386K |
|
679
Sandstorm Gold
SAND
$3.4B
| $422K | ﹤0.01% |
77,731
-38,582
| -33% | -$209K |
|
|
CIO
680
City Office REIT
CIO
$280M
| $420K | ﹤0.01% |
84,496
+79,466
| +1,580% | +$395K |
|
681
Hologic
HOLX
$14.6B
| $420K | ﹤0.01% |
+5,670
| New | +$420K |
|
682
Stride
LRN
$6.89B
| $420K | ﹤0.01% |
5,959
-12,694
| -68% | -$895K |
|
683
Amylyx Pharmaceuticals
AMLX
$1.05B
| $418K | ﹤0.01% |
220,517
+138,410
| +169% | +$262K |
|
684
HighPeak Energy
HPK
$926M
| $417K | ﹤0.01% |
29,695
-9,456
| -24% | -$133K |
|
685
RPC Inc
RES
$1.02B
| $416K | ﹤0.01% |
66,714
+16,626
| +33% | +$104K |
|
686
XP
XP
$9.83B
| $414K | ﹤0.01% |
+23,561
| New | +$414K |
|
687
Wolverine World Wide
WWW
$2.51B
| $410K | ﹤0.01% |
30,367
-32,016
| -51% | -$432K |
|
688
3D Systems Corporation
DDD
$272M
| $409K | ﹤0.01% |
133,350
-24,022
| -15% | -$73.7K |
|
689
MKS Inc. Common Stock
MKSI
$7.43B
| $409K | ﹤0.01% |
3,137
+1,052
| +50% | +$137K |
|
690
Navigator Holdings
NVGS
$1.1B
| $409K | ﹤0.01% |
23,452
+13,598
| +138% | +$237K |
|
691
Expeditors International
EXPD
$16.5B
| $407K | ﹤0.01% |
3,266
+2,005
| +159% | +$250K |
|
692
Getty Images
GETY
$772M
| $407K | ﹤0.01% |
124,898
+1,059
| +0.9% | +$3.45K |
|
|
SVM
693
Silvercorp Metals
SVM
$1.09B
| $406K | ﹤0.01% |
120,910
+48,805
| +68% | +$164K |
|
|
EQC
694
DELISTED
Equity Commonwealth
EQC
| $403K | ﹤0.01% |
20,794
-5,674
| -21% | -$110K |
|
|
DESP
695
DELISTED
Despegar.com
DESP
| $401K | ﹤0.01% |
30,324
+29,033
| +2,249% | +$384K |
|
696
Element Solutions
ESI
$6.24B
| $401K | ﹤0.01% |
+14,808
| New | +$401K |
|
697
Lumentum
LITE
$11.5B
| $400K | ﹤0.01% |
7,865
-16,804
| -68% | -$855K |
|
698
EVgo
EVGO
$515M
| $397K | ﹤0.01% |
162,286
+80,729
| +99% | +$197K |
|
699
Mama's Creations
MAMA
$391M
| $397K | ﹤0.01% |
58,954
+47,468
| +413% | +$320K |
|
700
Ramaco Resources Class A
METC
$1.72B
| $397K | ﹤0.01% |
32,977
+30,682
| +1,337% | +$369K |
|