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 | |
|---|---|---|---|---|---|---|
776
Cardlytics
CDLX
$52.2M
| $181K | ﹤0.01% |
+2,882
| New | +$181K |
|
|
KA
777
DELISTED
Kineta, Inc. Common Stock
KA
| $181K | ﹤0.01% |
567
+503
| +786% | +$161K |
|
|
PSXP
778
DELISTED
PHILLIPS 66 PARTNERS LP
PSXP
| $181K | ﹤0.01% |
+2,940
| New | +$181K |
|
779
A.O. Smith
AOS
$10.1B
| $180K | ﹤0.01% |
3,798
-6,112
| -62% | -$290K |
|
|
LTRPA
780
DELISTED
Liberty TripAdvisor Holdings, Inc. Series A
LTRPA
| $180K | ﹤0.01% |
24,554
+23,358
| +1,953% | +$171K |
|
781
LGI Homes
LGIH
$1.45B
| $178K | ﹤0.01% |
2,533
+879
| +53% | +$61.8K |
|
|
AVID
782
DELISTED
Avid Technology Inc
AVID
| $178K | ﹤0.01% |
+20,846
| New | +$178K |
|
783
Insmed
INSM
$31.1B
| $175K | ﹤0.01% |
+7,359
| New | +$175K |
|
784
Star Bulk Carriers
SBLK
$2.25B
| $175K | ﹤0.01% |
14,831
+14,652
| +8,185% | +$173K |
|
|
SAFM
785
DELISTED
Sanderson Farms Inc
SAFM
| $175K | ﹤0.01% |
994
+744
| +298% | +$131K |
|
786
Churchill Downs
CHDN
$6.85B
| $174K | ﹤0.01% |
+2,544
| New | +$174K |
|
787
Cerence
CRNC
$418M
| $174K | ﹤0.01% |
+7,694
| New | +$174K |
|
788
USA Compression Partners
USAC
$2.85B
| $174K | ﹤0.01% |
9,643
-5,724
| -37% | -$103K |
|
789
Freshpet
FRPT
$2.78B
| $173K | ﹤0.01% |
2,929
+2,724
| +1,329% | +$161K |
|
790
Theravance Biopharma
TBPH
$693M
| $173K | ﹤0.01% |
6,689
+1,646
| +33% | +$42.6K |
|
|
TLRD
791
DELISTED
Tailored Brands, Inc.
TLRD
| $173K | ﹤0.01% |
+41,827
| New | +$173K |
|
792
Banc of California
BANC
$2.65B
| $171K | ﹤0.01% |
10,006
+8,695
| +663% | +$149K |
|
793
Calix
CALX
$4.03B
| $171K | ﹤0.01% |
21,398
+16,499
| +337% | +$132K |
|
794
Ocular Therapeutix
OCUL
$2.22B
| $171K | ﹤0.01% |
43,537
+23,192
| +114% | +$91.1K |
|
795
StoneX
SNEX
$4.99B
| $171K | ﹤0.01% |
7,900
+6,093
| +337% | +$132K |
|
796
Travelzoo
TZOO
$106M
| $171K | ﹤0.01% |
16,034
+6,695
| +72% | +$71.4K |
|
797
Jack in the Box
JACK
$377M
| $170K | ﹤0.01% |
2,191
+1,933
| +749% | +$150K |
|
798
Vishay Intertechnology
VSH
$2.07B
| $168K | ﹤0.01% |
+7,906
| New | +$168K |
|
799
OneMain Financial
OMF
$7.23B
| $167K | ﹤0.01% |
+3,981
| New | +$167K |
|
800
Sturm, Ruger & Co
RGR
$569M
| $167K | ﹤0.01% |
3,565
-200
| -5% | -$9.37K |
|