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 | |
|---|---|---|---|---|---|---|
876
Lumen
LUMN
$6.25B
| $227K | ﹤0.01% |
207,166
-72,344
| -26% | -$79.3K |
|
|
HA
877
DELISTED
Hawaiian Holdings, Inc.
HA
| $226K | ﹤0.01% |
18,202
-40,098
| -69% | -$498K |
|
878
AMC Networks
AMCX
$346M
| $225K | ﹤0.01% |
23,315
+20,251
| +661% | +$195K |
|
879
Brown & Brown
BRO
$31.1B
| $225K | ﹤0.01% |
+2,527
| New | +$225K |
|
|
RDFN
880
DELISTED
Redfin
RDFN
| $225K | ﹤0.01% |
37,524
-3,696
| -9% | -$22.2K |
|
881
Direxion Daily Energy Bull 2X Shares
ERX
$224M
| $223K | ﹤0.01% |
3,433
-26,316
| -88% | -$1.71M |
|
882
Brookfield
BN
$103B
| $222K | ﹤0.01% |
+5,362
| New | +$222K |
|
883
First Trust NASDAQ Cybersecurity ETF
CIBR
$10.9B
| $221K | ﹤0.01% |
+3,921
| New | +$221K |
|
884
Sun Country Airlines
SNCY
$728M
| $221K | ﹤0.01% |
17,601
+7,074
| +67% | +$88.8K |
|
885
Modine Manufacturing
MOD
$7.71B
| $220K | ﹤0.01% |
2,197
-1,525
| -41% | -$153K |
|
886
iShares US Telecommunications ETF
IYZ
$614M
| $216K | ﹤0.01% |
+9,961
| New | +$216K |
|
887
Vanguard Long-Term Treasury ETF
VGLT
$10.2B
| $216K | ﹤0.01% |
+3,755
| New | +$216K |
|
888
Applied Industrial Technologies
AIT
$10.2B
| $215K | ﹤0.01% |
+1,112
| New | +$215K |
|
889
Direxion Daily MSCI Brazil Bull 2X Shares
BRZU
$136M
| $214K | ﹤0.01% |
+3,453
| New | +$214K |
|
890
NOV
NOV
$4.94B
| $214K | ﹤0.01% |
11,301
-52,830
| -82% | -$1M |
|
891
Fiserv
FI
$73.8B
| $212K | ﹤0.01% |
+1,423
| New | +$212K |
|
|
VRN
892
DELISTED
Veren
VRN
| $212K | ﹤0.01% |
27,031
+13,190
| +95% | +$103K |
|
893
Icon
ICLR
$13.6B
| $211K | ﹤0.01% |
+675
| New | +$211K |
|
|
JWN
894
DELISTED
Nordstrom
JWN
| $211K | ﹤0.01% |
+9,981
| New | +$211K |
|
895
Cerence
CRNC
$426M
| $210K | ﹤0.01% |
+74,530
| New | +$210K |
|
|
MGIC
896
Magic Software Enterprises
MGIC
$1B
| $210K | ﹤0.01% |
21,866
+3,129
| +17% | +$30.1K |
|
897
YPF
YPF
$11.1B
| $210K | ﹤0.01% |
10,481
-88,794
| -89% | -$1.78M |
|
898
DocGo
DCGO
$154M
| $209K | ﹤0.01% |
67,684
+55,965
| +478% | +$173K |
|
899
Nine Energy Service
NINE
$30.6M
| $209K | ﹤0.01% |
124,659
+112,242
| +904% | +$188K |
|
900
Vermilion Energy
VET
$1.14B
| $209K | ﹤0.01% |
+19,012
| New | +$209K |
|