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 | |
|---|---|---|---|---|---|---|
|
CADE
751
DELISTED
Cadence Bancorporation
CADE
| $194K | ﹤0.01% |
10,746
-45,980
| -81% | -$830K |
|
752
Premier
PINC
$2.24B
| $193K | ﹤0.01% |
5,111
-1,405
| -22% | -$53.1K |
|
753
Vanguard FTSE Europe ETF
VGK
$27B
| $193K | ﹤0.01% |
+3,305
| New | +$193K |
|
|
SP
754
DELISTED
SP Plus Corporation
SP
| $193K | ﹤0.01% |
+4,558
| New | +$193K |
|
|
LX
755
LexinFintech Holdings
LX
$1.01B
| $192K | ﹤0.01% |
13,873
-7,294
| -34% | -$101K |
|
|
APTS
756
DELISTED
Preferred Apartment Communities, Inc.
APTS
| $192K | ﹤0.01% |
+14,450
| New | +$192K |
|
757
Cardinal Health
CAH
$36B
| $190K | ﹤0.01% |
3,776
-68,552
| -95% | -$3.45M |
|
758
Nomad Foods
NOMD
$2.13B
| $190K | ﹤0.01% |
8,503
-4,084
| -32% | -$91.3K |
|
|
ZNGA
759
DELISTED
ZYNGA INC. CL A COMMON
ZNGA
| $190K | ﹤0.01% |
31,053
-33,907
| -52% | -$207K |
|
|
MGLN
760
DELISTED
Magellan Health Services, Inc.
MGLN
| $190K | ﹤0.01% |
2,439
-465
| -16% | -$36.2K |
|
761
Sally Beauty Holdings
SBH
$1.45B
| $189K | ﹤0.01% |
+10,362
| New | +$189K |
|
|
SCU
762
DELISTED
Sculptor Capital Management, Inc. Class A Common Stock
SCU
| $189K | ﹤0.01% |
+8,589
| New | +$189K |
|
|
SLCA
763
DELISTED
U.S. SILICA HOLDINGS, INC.
SLCA
| $188K | ﹤0.01% |
+30,585
| New | +$188K |
|
764
Sensient Technologies
SXT
$4.73B
| $187K | ﹤0.01% |
+2,844
| New | +$187K |
|
765
IAMGOLD
IAG
$5.76B
| $186K | ﹤0.01% |
49,922
+31,372
| +169% | +$117K |
|
766
Omega Healthcare
OHI
$12.6B
| $186K | ﹤0.01% |
4,411
+1,430
| +48% | +$60.3K |
|
767
Alaunos Therapeutics
TCRT
$5.07M
| $186K | ﹤0.01% |
264
+202
| +326% | +$142K |
|
768
Viavi Solutions
VIAV
$2.61B
| $186K | ﹤0.01% |
12,437
-19,849
| -61% | -$297K |
|
|
IBTX
769
DELISTED
Independent Bank Group, Inc.
IBTX
| $186K | ﹤0.01% |
3,369
+3,366
| +112,200% | +$186K |
|
|
JKS
770
JinkoSolar
JKS
$1.26B
| $185K | ﹤0.01% |
8,266
-12,939
| -61% | -$290K |
|
771
HEICO
HEI
$44B
| $184K | ﹤0.01% |
+1,616
| New | +$184K |
|
772
Progress Software
PRGS
$1.85B
| $184K | ﹤0.01% |
+4,444
| New | +$184K |
|
773
Babcock & Wilcox
BW
$203M
| $183K | ﹤0.01% |
50,334
+40,943
| +436% | +$149K |
|
774
Dine Brands
DIN
$360M
| $183K | ﹤0.01% |
2,202
-269
| -11% | -$22.4K |
|
775
Western Alliance Bancorporation
WAL
$9.75B
| $183K | ﹤0.01% |
+3,215
| New | +$183K |
|