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 |
Apple
AAPL
|
$80M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$45.3M |
| 3 |
Alphabet (Google) Class C
GOOG
|
$38.8M |
| 4 |
Amazon
AMZN
|
$38.6M |
| 5 |
Tesla
TSLA
|
$36M |
Top Sells
| 1 |
Alibaba
BABA
|
$46.4M |
| 2 |
Boeing
BA
|
$29.8M |
| 3 |
SPDR Gold Trust
GLD
|
$18.2M |
| 4 |
Biogen
BIIB
|
$15.8M |
| 5 |
NVIDIA
NVDA
|
$14.3M |
Sector Composition
| 1 | Technology | 22.73% |
| 2 | Consumer Discretionary | 17.54% |
| 3 | Communication Services | 10.03% |
| 4 | Healthcare | 9.29% |
| 5 | Industrials | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
BIG
601
DELISTED
Big Lots, Inc.
BIG
| $301K | ﹤0.01% |
10,493
+6,256
| +148% | +$179K |
|
602
Philips
PHG
$26.5B
| $300K | ﹤0.01% |
7,461
-10,263
| -58% | -$413K |
|
|
DPLO
603
DELISTED
DIPLOMAT PHARMACY, INC.
DPLO
| $300K | ﹤0.01% |
75,000
+69,114
| +1,174% | +$276K |
|
604
Ciena
CIEN
$16.5B
| $299K | ﹤0.01% |
7,012
+2,972
| +74% | +$127K |
|
605
Dycom Industries
DY
$7.19B
| $297K | ﹤0.01% |
6,310
+2,970
| +89% | +$140K |
|
606
ProShares Short S&P500
SH
$1.24B
| $297K | ﹤0.01% |
3,097
-4,498
| -59% | -$431K |
|
607
Direxion Daily Energy Bull 2X Shares
ERX
$218M
| $296K | ﹤0.01% |
+1,692
| New | +$296K |
|
608
1-800-Flowers.com
FLWS
$324M
| $295K | ﹤0.01% |
+20,390
| New | +$295K |
|
|
MTOR
609
DELISTED
MERITOR, Inc.
MTOR
| $295K | ﹤0.01% |
11,281
+10,358
| +1,122% | +$271K |
|
|
RST
610
DELISTED
ROSETTA STONE INC
RST
| $292K | ﹤0.01% |
+16,122
| New | +$292K |
|
611
Cboe Global Markets
CBOE
$24.3B
| $291K | ﹤0.01% |
+2,431
| New | +$291K |
|
612
Annaly Capital Management
NLY
$14.2B
| $289K | ﹤0.01% |
7,674
-8,517
| -53% | -$321K |
|
|
CUB
613
DELISTED
Cubic Corporation
CUB
| $288K | ﹤0.01% |
+4,542
| New | +$288K |
|
|
LM
614
DELISTED
Legg Mason, Inc.
LM
| $287K | ﹤0.01% |
+8,000
| New | +$287K |
|
615
Myriad Genetics
MYGN
$615M
| $286K | ﹤0.01% |
10,518
+6,035
| +135% | +$164K |
|
616
Thomson Reuters
TRI
$78.7B
| $286K | ﹤0.01% |
+3,851
| New | +$286K |
|
617
United States Brent Oil Fund
BNO
$108M
| $285K | ﹤0.01% |
13,693
-1,553
| -10% | -$32.3K |
|
618
Fox Class A
FOXA
$27.4B
| $285K | ﹤0.01% |
7,709
-8,106
| -51% | -$300K |
|
619
Verra Mobility
VRRM
$3.97B
| $285K | ﹤0.01% |
+20,407
| New | +$285K |
|
620
Zillow
Z
$21.3B
| $285K | ﹤0.01% |
+6,204
| New | +$285K |
|
621
FMC
FMC
$4.72B
| $284K | ﹤0.01% |
+2,851
| New | +$284K |
|
|
NS
622
DELISTED
NuStar Energy L.P.
NS
| $284K | ﹤0.01% |
+11,014
| New | +$284K |
|
|
QIWI
623
DELISTED
QIWI PLC
QIWI
| $284K | ﹤0.01% |
14,674
+9,835
| +203% | +$190K |
|
624
DigitalBridge
DBRG
$2.04B
| $283K | ﹤0.01% |
+14,902
| New | +$283K |
|
625
Sabesp
SBS
$15.8B
| $283K | ﹤0.01% |
18,809
-19,796
| -51% | -$298K |
|