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 | |
|---|---|---|---|---|---|---|
1051
Kimco Realty
KIM
$15.1B
| $90K | ﹤0.01% |
+4,352
| New | +$90K |
|
1052
Nomura Holdings
NMR
$21.9B
| $90K | ﹤0.01% |
17,476
+16,832
| +2,614% | +$86.7K |
|
1053
Vanguard Small-Cap ETF
VB
$66.7B
| $90K | ﹤0.01% |
544
+520
| +2,167% | +$86K |
|
|
MEET
1054
DELISTED
The Meet Group, Inc. Common Stock
MEET
| $90K | ﹤0.01% |
18,088
-20,064
| -53% | -$99.8K |
|
1055
Noodles & Co
NDLS
$30.6M
| $89K | ﹤0.01% |
16,172
+14,083
| +674% | +$77.5K |
|
1056
Sanmina
SANM
$6.53B
| $88K | ﹤0.01% |
+2,574
| New | +$88K |
|
1057
iShares Core Dividend Growth ETF
DGRO
$34B
| $87K | ﹤0.01% |
2,091
-210
| -9% | -$8.74K |
|
1058
NMI Holdings
NMIH
$3.07B
| $87K | ﹤0.01% |
2,642
-5,029
| -66% | -$166K |
|
1059
Teucrium Sugar Fund
CANE
$12.5M
| $86K | ﹤0.01% |
12,379
-4,146
| -25% | -$28.8K |
|
1060
Ceragon Networks
CRNT
$180M
| $86K | ﹤0.01% |
41,075
+8,722
| +27% | +$18.3K |
|
1061
ProPetro Holding
PUMP
$505M
| $86K | ﹤0.01% |
7,712
-18,162
| -70% | -$203K |
|
|
SWCH
1062
DELISTED
Switch, Inc. Class A Common Stock
SWCH
| $86K | ﹤0.01% |
5,817
+2,405
| +70% | +$35.6K |
|
|
APHA
1063
DELISTED
Aphria Inc. Common Shares
APHA
| $86K | ﹤0.01% |
+16,482
| New | +$86K |
|
1064
ACI Worldwide
ACIW
$5.17B
| $85K | ﹤0.01% |
+2,257
| New | +$85K |
|
1065
Markel Group
MKL
$24.3B
| $85K | ﹤0.01% |
75
| – | – |
|
1066
Neogen
NEOG
$1.21B
| $85K | ﹤0.01% |
2,620
+2,430
| +1,279% | +$78.8K |
|
|
MOBL
1067
DELISTED
MobileIron, Inc.
MOBL
| $85K | ﹤0.01% |
17,572
+12,766
| +266% | +$61.8K |
|
|
NTUS
1068
DELISTED
Natus Medical Inc
NTUS
| $84K | ﹤0.01% |
2,559
+1,932
| +308% | +$63.4K |
|
1069
Avient
AVNT
$3.34B
| $83K | ﹤0.01% |
2,267
+2,019
| +814% | +$73.9K |
|
1070
Franklin Covey
FC
$234M
| $83K | ﹤0.01% |
2,597
-73
| -3% | -$2.33K |
|
1071
Kirby Corp
KEX
$4.85B
| $83K | ﹤0.01% |
+932
| New | +$83K |
|
1072
Plexus
PLXS
$3.71B
| $83K | ﹤0.01% |
1,088
-1,110
| -51% | -$84.7K |
|
1073
Relmada Therapeutics
RLMD
$53.4M
| $83K | ﹤0.01% |
+2,140
| New | +$83K |
|
1074
XBiotech
XBIT
$85.4M
| $83K | ﹤0.01% |
4,491
+4,253
| +1,787% | +$78.6K |
|
1075
Caleres
CAL
$527M
| $82K | ﹤0.01% |
+3,462
| New | +$82K |
|