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 |
Alphabet (Google) Class C
GOOG
|
+$54.1M |
| 2 |
Apple
AAPL
|
+$28.6M |
| 3 |
Meta Platforms (Facebook)
META
|
+$16.5M |
| 4 |
IBM
IBM
|
+$13.4M |
| 5 |
Baidu
BIDU
|
+$10.3M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
+$9.89M |
| 2 |
McDonald's
MCD
|
+$8.52M |
| 3 |
Ralph Lauren
RL
|
+$5.22M |
| 4 |
Intel
INTC
|
+$4.74M |
| 5 |
WBA
Walgreens Boots Alliance
WBA
|
+$4.67M |
Sector Composition
| 1 | Communication Services | 22.01% |
| 2 | Technology | 15.83% |
| 3 | Healthcare | 11.95% |
| 4 | Consumer Discretionary | 9.73% |
| 5 | Financials | 7.98% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
776
Huntington Ingalls Industries
HII
$10.7B
| $71K | 0.01% |
635
-317
| -33% | -$35.4K |
|
777
LPL Financial
LPLA
$27.4B
| $71K | 0.01% |
+1,528
| New | +$71K |
|
|
PSXP
778
DELISTED
PHILLIPS 66 PARTNERS LP
PSXP
| $71K | 0.01% |
994
-7,214
| -88% | -$515K |
|
779
Cerus
CERS
$226M
| $70K | 0.01% |
13,620
+8,608
| +172% | +$44.2K |
|
|
HZNP
780
DELISTED
Horizon Therapeutics Public Limited Company Ordinary Shares
HZNP
| $70K | 0.01% |
2,033
+1,983
| +3,966% | +$68.3K |
|
|
TRNX
781
DELISTED
TORNIER N V SHARES (NLD)
TRNX
| $70K | 0.01% |
+2,835
| New | +$70K |
|
782
Boise Cascade
BCC
$3.21B
| $69K | 0.01% |
+1,885
| New | +$69K |
|
783
WisdomTree India Earnings Fund ETF
EPI
$2.93B
| $69K | 0.01% |
+3,224
| New | +$69K |
|
784
East-West Bancorp
EWBC
$14.9B
| $69K | 0.01% |
1,559
+1,164
| +295% | +$51.5K |
|
785
MakeMyTrip
MMYT
$9.1B
| $69K | 0.01% |
+3,532
| New | +$69K |
|
786
Metallus
MTUS
$695M
| $69K | 0.01% |
2,580
+594
| +30% | +$15.9K |
|
|
TLGT
787
DELISTED
Teligent, Inc
TLGT
| $69K | 0.01% |
1,096
+384
| +54% | +$24.2K |
|
|
FLTX
788
DELISTED
Fleetmatics Group PLC
FLTX
| $69K | 0.01% |
+1,485
| New | +$69K |
|
789
KeyCorp
KEY
$21.1B
| $68K | 0.01% |
4,567
+2,977
| +187% | +$44.3K |
|
790
SunCoke Energy
SXC
$656M
| $68K | 0.01% |
5,239
+4,812
| +1,127% | +$62.5K |
|
791
Alaunos Therapeutics
TCRT
$4.83M
| $68K | 0.01% |
+38
| New | +$68K |
|
|
RTN
792
DELISTED
Raytheon Company
RTN
| $68K | 0.01% |
+711
| New | +$68K |
|
|
ULTI
793
DELISTED
Ultimate Software Group Inc
ULTI
| $68K | 0.01% |
419
+220
| +111% | +$35.7K |
|
|
NSR
794
DELISTED
Neustar Inc
NSR
| $68K | 0.01% |
2,347
-2,753
| -54% | -$79.8K |
|
|
OUTR
795
DELISTED
OUTERWALL INC
OUTR
| $68K | 0.01% |
903
-501
| -36% | -$37.7K |
|
|
AIRM
796
DELISTED
Air Methods Corp
AIRM
| $68K | 0.01% |
1,654
+942
| +132% | +$38.7K |
|
797
VanEck Biotech ETF
BBH
$349M
| $67K | 0.01% |
500
+258
| +107% | +$34.6K |
|
798
Enterprise Products Partners
EPD
$68.5B
| $67K | 0.01% |
2,271
-10,421
| -82% | -$307K |
|
799
Flotek Industries
FTK
$331M
| $67K | 0.01% |
898
+682
| +316% | +$50.9K |
|
800
Gannett
GCI
$601M
| $67K | 0.01% |
3,748
-3,957
| -51% | -$70.7K |
|