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 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$278M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$84.4M |
| 3 |
NVIDIA
NVDA
|
+$76.9M |
| 4 |
TSMC
TSM
|
+$74.9M |
| 5 |
Amazon
AMZN
|
+$53.5M |
Top Sells
| 1 |
Apple
AAPL
|
+$497M |
| 2 |
Strategy Inc Common Stock Class A
MSTR
|
+$73.7M |
| 3 |
Alibaba
BABA
|
+$49M |
| 4 |
Advanced Micro Devices
AMD
|
+$48.1M |
| 5 |
Uber
UBER
|
+$41.8M |
Sector Composition
| 1 | Technology | 22.9% |
| 2 | Consumer Discretionary | 12.26% |
| 3 | Healthcare | 9.52% |
| 4 | Communication Services | 8.42% |
| 5 | Financials | 7.07% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
901
Viant Technology
DSP
$162M
| $176K | ﹤0.01% |
+14,215
| New | +$176K |
|
902
Imperial Oil
IMO
$46.8B
| $174K | ﹤0.01% |
2,407
+1,865
| +344% | +$135K |
|
903
ANI Pharmaceuticals
ANIP
$2.14B
| $173K | ﹤0.01% |
+2,589
| New | +$173K |
|
904
HEICO Class A
HEI.A
$35.3B
| $173K | ﹤0.01% |
824
-353
| -30% | -$74.1K |
|
|
LAND
905
Gladstone Land Corp
LAND
$322M
| $173K | ﹤0.01% |
16,472
-944
| -5% | -$9.92K |
|
906
Roper Technologies
ROP
$55.7B
| $173K | ﹤0.01% |
+295
| New | +$173K |
|
|
TPC
907
Tutor Perini Corporation
TPC
$3.32B
| $173K | ﹤0.01% |
+7,493
| New | +$173K |
|
908
Fortive
FTV
$16.8B
| $172K | ﹤0.01% |
+2,353
| New | +$172K |
|
909
ManpowerGroup
MAN
$1.83B
| $172K | ﹤0.01% |
+2,983
| New | +$172K |
|
910
GlobalFoundries
GFS
$17.9B
| $171K | ﹤0.01% |
+4,646
| New | +$171K |
|
911
Stitch Fix
SFIX
$757M
| $171K | ﹤0.01% |
52,767
-32,926
| -38% | -$107K |
|
912
Atomera
ATOM
$103M
| $168K | ﹤0.01% |
42,000
-33,165
| -44% | -$133K |
|
913
Krispy Kreme
DNUT
$539M
| $168K | ﹤0.01% |
34,297
-3,099
| -8% | -$15.2K |
|
914
Hallador Energy
HNRG
$736M
| $168K | ﹤0.01% |
+13,688
| New | +$168K |
|
915
Jack in the Box
JACK
$342M
| $167K | ﹤0.01% |
6,156
-35,359
| -85% | -$959K |
|
916
Paycom
PAYC
$12.7B
| $167K | ﹤0.01% |
+767
| New | +$167K |
|
917
Cognex
CGNX
$7.55B
| $165K | ﹤0.01% |
5,562
+3,334
| +150% | +$98.9K |
|
918
Playtika
PLTK
$1.38B
| $165K | ﹤0.01% |
31,943
+25,841
| +423% | +$133K |
|
919
Option Care Health
OPCH
$4.77B
| $164K | ﹤0.01% |
4,699
-10,421
| -69% | -$364K |
|
920
GraniteShares 2x Short NVDA Daily ETF
NVD
$47.1M
| $164K | ﹤0.01% |
4,758
+2,538
| +114% | +$87.5K |
|
921
Conduent
CNDT
$458M
| $162K | ﹤0.01% |
+60,301
| New | +$162K |
|
922
O-I Glass
OI
$2.04B
| $162K | ﹤0.01% |
14,182
-19,526
| -58% | -$223K |
|
923
Clearway Energy Class C
CWEN
$3.37B
| $161K | ﹤0.01% |
5,338
-243
| -4% | -$7.33K |
|
924
Denny's
DENN
$270M
| $161K | ﹤0.01% |
44,006
+43,320
| +6,315% | +$158K |
|
925
YieldMax NVDA Option Income Strategy ETF
NVDY
$1.79B
| $160K | ﹤0.01% |
10,448
-19,449
| -65% | -$298K |
|