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 | |
|---|---|---|---|---|---|---|
1701
Eagle Bancorp
EGBN
$615M
| $15K | ﹤0.01% |
+820
| New | +$15K |
|
1702
Epsilon Energy
EPSN
$120M
| $15K | ﹤0.01% |
2,756
-580
| -17% | -$3.16K |
|
1703
Erasca
ERAS
$443M
| $15K | ﹤0.01% |
6,688
+2,056
| +44% | +$4.61K |
|
1704
Energy Recovery
ERII
$764M
| $15K | ﹤0.01% |
1,138
-1,546
| -58% | -$20.4K |
|
1705
First Watch Restaurant Group
FWRG
$1.04B
| $15K | ﹤0.01% |
891
-3,092
| -78% | -$52.1K |
|
1706
Gladstone Investment Corp
GAIN
$544M
| $15K | ﹤0.01% |
1,131
-39
| -3% | -$517 |
|
1707
Good Times Restaurants
GTIM
$17.1M
| $15K | ﹤0.01% |
6,205
+3,434
| +124% | +$8.3K |
|
1708
Inspired Entertainment
INSE
$253M
| $15K | ﹤0.01% |
1,700
-7,012
| -80% | -$61.9K |
|
1709
T-Rex 2X Inverse NVIDIA Daily Target ETF
NVDQ
$46.9M
| $15K | ﹤0.01% |
+2,541
| New | +$15K |
|
1710
Global X US Preferred ETF
PFFD
$2.37B
| $15K | ﹤0.01% |
810
-39
| -5% | -$722 |
|
1711
Relay Therapeutics
RLAY
$688M
| $15K | ﹤0.01% |
2,409
+2,259
| +1,506% | +$14.1K |
|
1712
Sangamo Therapeutics
SGMO
$152M
| $15K | ﹤0.01% |
43,904
+989
| +2% | +$338 |
|
1713
Weave Communications
WEAV
$591M
| $15K | ﹤0.01% |
+1,771
| New | +$15K |
|
1714
SPDR S&P Semiconductor ETF
XSD
$1.48B
| $15K | ﹤0.01% |
61
+15
| +33% | +$3.69K |
|
1715
KalVista Pharmaceuticals
KALV
$708M
| $14K | ﹤0.01% |
1,215
-2,211
| -65% | -$25.5K |
|
1716
Loop Industries
LOOP
$92.1M
| $14K | ﹤0.01% |
7,055
+6,903
| +4,541% | +$13.7K |
|
1717
Lantern Pharma
LTRN
$41.4M
| $14K | ﹤0.01% |
3,200
+272
| +9% | +$1.19K |
|
1718
Caribou Biosciences
CRBU
$168M
| $14K | ﹤0.01% |
8,613
-10,599
| -55% | -$17.2K |
|
1719
Carnival PLC
CUK
$37.7B
| $14K | ﹤0.01% |
+827
| New | +$14K |
|
1720
Torrid Holdings
CURV
$189M
| $14K | ﹤0.01% |
+1,997
| New | +$14K |
|
1721
CureVac
CVAC
$1.2B
| $14K | ﹤0.01% |
4,391
+2,398
| +120% | +$7.65K |
|
1722
CryoPort
CYRX
$433M
| $14K | ﹤0.01% |
2,090
-13,272
| -86% | -$88.9K |
|
1723
iShares MSCI China Small-Cap ETF
ECNS
$94.6M
| $14K | ﹤0.01% |
600
-15,879
| -96% | -$371K |
|
1724
eHealth
EHTH
$122M
| $14K | ﹤0.01% |
3,234
-14
| -0.4% | -$61 |
|
1725
Federal Signal
FSS
$7.64B
| $14K | ﹤0.01% |
+176
| New | +$14K |
|