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 |
Goldman Sachs
GS
|
+$38.4M |
| 2 |
Micron Technology
MU
|
+$23.7M |
| 3 |
NVIDIA
NVDA
|
+$23.6M |
| 4 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$21.7M |
| 5 |
Wells Fargo
WFC
|
+$20.4M |
Top Sells
| 1 |
Citigroup
C
|
+$21.6M |
| 2 |
Apple
AAPL
|
+$17.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$13.3M |
| 4 |
Eli Lilly
LLY
|
+$9.69M |
| 5 |
Mastercard
MA
|
+$8.27M |
Sector Composition
| 1 | Technology | 14.2% |
| 2 | Communication Services | 13.46% |
| 3 | Consumer Discretionary | 12.76% |
| 4 | Healthcare | 12.43% |
| 5 | Financials | 10.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
EMKR
876
DELISTED
Emcore Corp
EMKR
| $114K | ﹤0.01% |
1,276
+831
| +187% | +$74.2K |
|
|
VRN
877
DELISTED
Veren
VRN
| $113K | ﹤0.01% |
10,498
+5,539
| +112% | +$59.6K |
|
|
XLRN
878
DELISTED
Acceleron Pharma Inc.
XLRN
| $113K | ﹤0.01% |
4,281
+2,438
| +132% | +$64.4K |
|
879
Brown-Forman Class B
BF.B
$13B
| $112K | ﹤0.01% |
+3,803
| New | +$112K |
|
|
GOGL
880
DELISTED
Golden Ocean Group
GOGL
| $110K | ﹤0.01% |
14,466
+6,455
| +81% | +$49.1K |
|
881
SPS Commerce
SPSC
$4.06B
| $110K | ﹤0.01% |
+3,794
| New | +$110K |
|
|
LQ
882
DELISTED
La Quinta Holdings Inc.
LQ
| $110K | ﹤0.01% |
+8,195
| New | +$110K |
|
883
LSB Industries
LXU
$573M
| $109K | ﹤0.01% |
+15,116
| New | +$109K |
|
884
PRA Group
PRAA
$648M
| $109K | ﹤0.01% |
3,292
+791
| +32% | +$26.2K |
|
|
SAFE
885
Safehold
SAFE
$1.17B
| $109K | ﹤0.01% |
+1,912
| New | +$109K |
|
886
Alaunos Therapeutics
TCRT
$5.29M
| $109K | ﹤0.01% |
116
-85
| -42% | -$79.9K |
|
887
Global X Lithium & Battery Tech ETF
LIT
$1.2B
| $108K | ﹤0.01% |
3,873
+2,848
| +278% | +$79.4K |
|
888
Prothena Corp
PRTA
$439M
| $108K | ﹤0.01% |
1,951
-1,485
| -43% | -$82.2K |
|
889
Gibraltar Industries
ROCK
$1.77B
| $108K | ﹤0.01% |
2,626
-764
| -23% | -$31.4K |
|
|
PN
890
DELISTED
Patriot National, Inc.
PN
| $108K | ﹤0.01% |
38,314
+33,078
| +632% | +$93.2K |
|
|
AHT
891
Ashford Hospitality Trust
AHT
$37.2M
| $107K | ﹤0.01% |
17
+13
| +325% | +$81.8K |
|
|
SPWR
892
DELISTED
SunPower Corporation Common Stock
SPWR
| $107K | ﹤0.01% |
+26,874
| New | +$107K |
|
|
WOOF
893
DELISTED
VCA Inc.
WOOF
| $107K | ﹤0.01% |
+1,177
| New | +$107K |
|
894
ATI
ATI
$10.8B
| $105K | ﹤0.01% |
+5,856
| New | +$105K |
|
895
ArcelorMittal
MT
$26.2B
| $105K | ﹤0.01% |
4,196
-7,416
| -64% | -$186K |
|
896
Synchronoss Technologies
SNCR
$68.9M
| $105K | ﹤0.01% |
482
+302
| +168% | +$65.8K |
|
|
INSY
897
DELISTED
Insys Therapeutics, Inc.
INSY
| $105K | ﹤0.01% |
10,020
-11,625
| -54% | -$122K |
|
898
Rayonier Advanced Materials
RYAM
$443M
| $104K | ﹤0.01% |
7,773
+3,763
| +94% | +$50.3K |
|
899
NMI Holdings
NMIH
$2.98B
| $103K | ﹤0.01% |
9,077
+7,313
| +415% | +$83K |
|
900
WPP
WPP
$5.66B
| $103K | ﹤0.01% |
+948
| New | +$103K |
|