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 | |
|---|---|---|---|---|---|---|
|
AZUL
901
DELISTED
Azul
AZUL
| $130K | ﹤0.01% |
+3,060
| New | +$130K |
|
902
Nordic American Tanker
NAT
$680M
| $129K | ﹤0.01% |
26,308
+7,417
| +39% | +$36.4K |
|
903
Akamai
AKAM
$11.1B
| $128K | ﹤0.01% |
+1,484
| New | +$128K |
|
904
Granite Construction
GVA
$4.76B
| $128K | ﹤0.01% |
+4,658
| New | +$128K |
|
905
Navios Maritime Partners
NMM
$1.43B
| $128K | ﹤0.01% |
6,897
+2,679
| +64% | +$49.7K |
|
|
PRMW
906
DELISTED
Primo Water Corporation
PRMW
| $128K | ﹤0.01% |
9,375
+1,376
| +17% | +$18.8K |
|
|
TWNK
907
DELISTED
Hostess Brands, Inc. Class A Common Stock
TWNK
| $128K | ﹤0.01% |
8,862
+4,811
| +119% | +$69.5K |
|
908
Warrior Met Coal
HCC
$3.06B
| $127K | ﹤0.01% |
6,055
+2,399
| +66% | +$50.3K |
|
909
Alliant Energy
LNT
$16.4B
| $127K | ﹤0.01% |
2,336
+2,008
| +612% | +$109K |
|
910
TransUnion
TRU
$18B
| $127K | ﹤0.01% |
1,484
-10,747
| -88% | -$920K |
|
|
ATRS
911
DELISTED
Antares Pharma, Inc.
ATRS
| $127K | ﹤0.01% |
27,115
-60,744
| -69% | -$285K |
|
|
ZIXI
912
DELISTED
Zix Corporation
ZIXI
| $127K | ﹤0.01% |
18,750
+1,103
| +6% | +$7.47K |
|
|
FOMX
913
DELISTED
Foamix Pharmaceuticals Ltd. Ordinary Shares
FOMX
| $127K | ﹤0.01% |
38,420
+1,967
| +5% | +$6.5K |
|
914
B&G Foods
BGS
$362M
| $126K | ﹤0.01% |
7,032
-10,721
| -60% | -$192K |
|
915
Church & Dwight Co
CHD
$22.6B
| $126K | ﹤0.01% |
1,805
-1,320
| -42% | -$92.1K |
|
916
Ooma
OOMA
$348M
| $126K | ﹤0.01% |
+9,592
| New | +$126K |
|
917
Sealed Air
SEE
$4.83B
| $126K | ﹤0.01% |
+3,186
| New | +$126K |
|
|
SPWR
918
DELISTED
SunPower Corporation Common Stock
SPWR
| $126K | ﹤0.01% |
+24,814
| New | +$126K |
|
919
Crown Castle
CCI
$41B
| $125K | ﹤0.01% |
+880
| New | +$125K |
|
920
Cheniere Energy
CQP
$25.9B
| $124K | ﹤0.01% |
3,129
-4,534
| -59% | -$180K |
|
921
Stewart Information Services
STC
$2.01B
| $124K | ﹤0.01% |
+3,057
| New | +$124K |
|
|
ATVI
922
DELISTED
Activision Blizzard Inc.
ATVI
| $124K | ﹤0.01% |
2,092
-42,254
| -95% | -$2.5M |
|
923
Denali Therapeutics
DNLI
$2.17B
| $123K | ﹤0.01% |
7,115
-700
| -9% | -$12.1K |
|
924
Qiagen
QGEN
$10B
| $123K | ﹤0.01% |
+3,440
| New | +$123K |
|
|
PTR
925
DELISTED
PETROCHINA COMPANY LIMITED ADS (REP 100 H SHARES)
PTR
| $123K | ﹤0.01% |
2,445
-5,157
| -68% | -$259K |
|