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 |
Energy Select Sector SPDR Fund
XLE
|
+$93.9M |
| 2 |
Pfizer
PFE
|
+$89.5M |
| 3 |
Boeing
BA
|
+$66.7M |
| 4 |
Intel
INTC
|
+$60.2M |
| 5 |
Meta Platforms (Facebook)
META
|
+$52.5M |
Top Sells
| 1 |
NVIDIA
NVDA
|
+$146M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$109M |
| 3 |
Alibaba
BABA
|
+$81.8M |
| 4 |
Walt Disney
DIS
|
+$80.2M |
| 5 |
Citigroup
C
|
+$55.3M |
Sector Composition
| 1 | Technology | 19.03% |
| 2 | Healthcare | 13.86% |
| 3 | Consumer Discretionary | 12.44% |
| 4 | Industrials | 8.48% |
| 5 | Communication Services | 7.95% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
926
DocuSign
DOCU
$17B
| $232K | ﹤0.01% |
+3,900
| New | +$232K |
|
927
Evergy
EVRG
$16.7B
| $231K | ﹤0.01% |
4,332
+2,954
| +214% | +$158K |
|
928
GrowGeneration
GRWG
$99.2M
| $230K | ﹤0.01% |
80,530
+64,735
| +410% | +$185K |
|
929
Global X Cybersecurity ETF
BUG
$1.17B
| $229K | ﹤0.01% |
7,726
-6,321
| -45% | -$187K |
|
930
Hudbay
HBM
$5.5B
| $229K | ﹤0.01% |
32,727
-146,300
| -82% | -$1.02M |
|
931
Arbutus Biopharma
ABUS
$805M
| $227K | ﹤0.01% |
88,130
-16,330
| -16% | -$42.1K |
|
932
Hudson Technologies
HDSN
$430M
| $226K | ﹤0.01% |
20,575
+19,423
| +1,686% | +$213K |
|
933
ProShares UltraShort Bloomberg Crude Oil
SCO
$128M
| $226K | ﹤0.01% |
+14,111
| New | +$226K |
|
934
Xponential Fitness
XPOF
$278M
| $226K | ﹤0.01% |
+13,703
| New | +$226K |
|
|
AY
935
DELISTED
Atlantica Sustainable Infrastructure plc Ordinary Shares
AY
| $226K | ﹤0.01% |
12,276
+7,047
| +135% | +$130K |
|
936
Celanese
CE
$4.85B
| $223K | ﹤0.01% |
1,303
-28,766
| -96% | -$4.92M |
|
937
Hexcel
HXL
$4.93B
| $222K | ﹤0.01% |
3,053
-210
| -6% | -$15.3K |
|
938
Aviat Networks
AVNW
$305M
| $221K | ﹤0.01% |
+5,767
| New | +$221K |
|
939
AppFolio
APPF
$10.1B
| $220K | ﹤0.01% |
893
+24
| +3% | +$5.91K |
|
940
Penumbra
PEN
$10B
| $220K | ﹤0.01% |
989
-7,322
| -88% | -$1.63M |
|
941
ProShares Ultra Bloomberg Crude Oil
UCO
$350M
| $220K | ﹤0.01% |
6,685
-2,852
| -30% | -$93.9K |
|
942
CommScope
COMM
$3.65B
| $219K | ﹤0.01% |
167,912
-44,100
| -21% | -$57.5K |
|
943
Tenable Holdings
TENB
$3.65B
| $219K | ﹤0.01% |
+4,432
| New | +$219K |
|
944
Blue Bird Corp
BLBD
$1.9B
| $218K | ﹤0.01% |
5,690
+4,230
| +290% | +$162K |
|
945
EverQuote
EVER
$923M
| $218K | ﹤0.01% |
11,776
+8,860
| +304% | +$164K |
|
946
ProAssurance
PRA
$1.22B
| $217K | ﹤0.01% |
+16,887
| New | +$217K |
|
947
ProShares UltraShort QQQ
QID
$286M
| $217K | ﹤0.01% |
+4,850
| New | +$217K |
|
|
RGLS
948
DELISTED
Regulus Therapeutics
RGLS
| $217K | ﹤0.01% |
+75,450
| New | +$217K |
|
949
Relmada Therapeutics
RLMD
$50.1M
| $217K | ﹤0.01% |
46,713
-9,272
| -17% | -$43.1K |
|
950
Invesco DB US Dollar Index Bearish Fund
UDN
$151M
| $215K | ﹤0.01% |
11,998
-7,837
| -40% | -$140K |
|