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 |
Alibaba
BABA
|
+$48.9M |
| 2 |
Boeing
BA
|
+$25.8M |
| 3 |
SPDR Gold Trust
GLD
|
+$18.2M |
| 4 |
Biogen
BIIB
|
+$15.8M |
| 5 |
FedEx
FDX
|
+$13.6M |
Top Sells
| 1 |
Alphabet (Google) Class C
GOOG
|
+$62.1M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$36.4M |
| 3 |
Industrial Select Sector SPDR Fund
XLI
|
+$17.5M |
| 4 |
Netflix
NFLX
|
+$16.3M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$14.6M |
Sector Composition
| 1 | Consumer Discretionary | 16.74% |
| 2 | Technology | 16.32% |
| 3 | Healthcare | 12.17% |
| 4 | Industrials | 12.14% |
| 5 | Communication Services | 7.05% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
776
Sonoco
SON
$4.6B
| $133K | ﹤0.01% |
+2,297
| New | +$133K |
|
777
VirnetX
VHC
$74.7M
| $133K | ﹤0.01% |
1,236
-958
| -44% | -$103K |
|
778
Terex
TEX
$3.49B
| $132K | ﹤0.01% |
+5,110
| New | +$132K |
|
|
RAD
779
DELISTED
Rite Aid Corporation
RAD
| $132K | ﹤0.01% |
19,000
+36
| +0.2% | +$250 |
|
|
TACO
780
DELISTED
Del Taco Restaurants, Inc. Common Stock
TACO
| $132K | ﹤0.01% |
12,983
+10,821
| +501% | +$110K |
|
781
Bloom Energy
BE
$15.8B
| $131K | ﹤0.01% |
40,336
+26,421
| +190% | +$85.8K |
|
782
Starwood Property Trust
STWD
$7.56B
| $131K | ﹤0.01% |
5,434
+4,289
| +375% | +$103K |
|
783
Treehouse Foods
THS
$904M
| $131K | ﹤0.01% |
+2,365
| New | +$131K |
|
784
XPO
XPO
$15.9B
| $131K | ﹤0.01% |
5,300
-48,749
| -90% | -$1.2M |
|
|
QTS
785
DELISTED
QTS REALTY TRUST, INC.
QTS
| $131K | ﹤0.01% |
+2,567
| New | +$131K |
|
786
BJs Wholesale Club
BJ
$13B
| $130K | ﹤0.01% |
5,054
-2,508
| -33% | -$64.5K |
|
787
AdvanSix
ASIX
$580M
| $129K | ﹤0.01% |
+5,050
| New | +$129K |
|
788
United Natural Foods
UNFI
$1.79B
| $129K | ﹤0.01% |
+11,252
| New | +$129K |
|
|
RPT
789
DELISTED
RPT Realty Common Shares of Beneficial Interest (MD)
RPT
| $129K | ﹤0.01% |
+9,537
| New | +$129K |
|
|
GTT
790
DELISTED
GTT Communications, Inc.
GTT
| $129K | ﹤0.01% |
+13,712
| New | +$129K |
|
|
CEO
791
DELISTED
CNOOC Limited
CEO
| $129K | ﹤0.01% |
852
-611
| -42% | -$92.5K |
|
792
Edison International
EIX
$21.5B
| $128K | ﹤0.01% |
1,709
-21,442
| -93% | -$1.61M |
|
793
Myriad Genetics
MYGN
$705M
| $128K | ﹤0.01% |
4,483
-9,693
| -68% | -$277K |
|
794
Arcturus Therapeutics
ARCT
$488M
| $127K | ﹤0.01% |
12,420
+9,999
| +413% | +$102K |
|
|
ZIXI
795
DELISTED
Zix Corporation
ZIXI
| $127K | ﹤0.01% |
17,647
+16,185
| +1,107% | +$116K |
|
796
B2Gold
BTG
$5.89B
| $126K | ﹤0.01% |
39,148
-49,531
| -56% | -$159K |
|
797
Moody's
MCO
$92.6B
| $126K | ﹤0.01% |
620
-7,755
| -93% | -$1.58M |
|
798
Signet Jewelers
SIG
$3.77B
| $126K | ﹤0.01% |
7,557
-53,720
| -88% | -$896K |
|
799
First Trust Natural Gas ETF
FCG
$331M
| $125K | ﹤0.01% |
+10,915
| New | +$125K |
|
800
O-I Glass
OI
$2.01B
| $125K | ﹤0.01% |
12,191
+7,659
| +169% | +$78.5K |
|