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 | +$237M | |
| 2 | +$103M | |
| 3 | +$93.9M | |
| 4 |
iShares Bitcoin Trust
IBIT
|
+$80.5M |
| 5 |
Pinduoduo
PDD
|
+$61.3M |
Top Sells
| 1 | +$129M | |
| 2 | +$108M | |
| 3 | +$89.1M | |
| 4 |
Alphabet (Google) Class C
GOOG
|
+$79.3M |
| 5 |
Micron Technology
MU
|
+$64.3M |
Sector Composition
| 1 | Technology | 34.04% |
| 2 | Consumer Discretionary | 13.08% |
| 3 | Healthcare | 10.63% |
| 4 | Financials | 7.02% |
| 5 | Industrials | 3.96% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
101
CompoSecure Inc
CMPO
$2.65B
| $5.55M | ﹤0.01% |
+266,485
|
|
||
102
AES
AES
$10B
| $5.53M | ﹤0.01% |
419,971
-140,605
|
|
||
103
NewMarket
NEU
$7.39B
| $5.51M | ﹤0.01% |
6,660
+2,168
|
|
||
104
Grab
GRAB
$23.7B
| $5.41M | ﹤0.01% |
897,980
+487,857
|
|
||
105
Medical Properties Trust
MPW
$3B
| $5.4M | ﹤0.01% |
+1,064,629
|
|
||
106
Intuitive Surgical
ISRG
$203B
| $5.39M | ﹤0.01% |
+12,051
|
|
||
107
First Majestic Silver
AG
$6.16B
| $5.32M | ﹤0.01% |
433,038
+398,931
|
|
||
108
XPeng
XPEV
$26B
| $5.27M | ﹤0.01% |
224,967
-21,154
|
|
||
109
CSX Corp
CSX
$65.9B
| $5.24M | ﹤0.01% |
+147,475
|
|
||
110
Cloudflare
NET
$79.1B
| $5.21M | ﹤0.01% |
24,256
-13,979
|
|
||
111
BJs Wholesale Club
BJ
$12.3B
| $5.17M | ﹤0.01% |
55,461
+31,380
|
|
||
112
Roundhill Generative AI & Technology ETF
CHAT
$741M
| $5.17M | ﹤0.01% |
+84,019
|
|
||
113
Dick's Sporting Goods
DKS
$20B
| $5.13M | ﹤0.01% |
+23,066
|
|
||
114
Pagaya Technologies
PGY
$2.08B
| $5.06M | ﹤0.01% |
+170,550
|
|
||
115
NRG Energy
NRG
$32.4B
| $5M | ﹤0.01% |
30,856
-27,099
|
|
||
116
Vanguard Real Estate ETF
VNQ
$33.9B
| $4.98M | ﹤0.01% |
54,486
+27,709
|
|
||
117
Bloom Energy
BE
$30B
| $4.91M | ﹤0.01% |
58,043
-90,826
|
|
||
118
United States Oil Fund
USO
$867M
| $4.86M | ﹤0.01% |
+65,893
|
|
||
119
Canadian Pacific Kansas City
CP
$65.2B
| $4.86M | ﹤0.01% |
65,188
+10,711
|
|
||
|
BTC
120
Grayscale Bitcoin Mini Trust ETF
BTC
$4.43B
| $4.83M | ﹤0.01% |
95,512
+12,824
|
|
||
|
EH
121
EHang Holdings
EH
$1.16B
| $4.8M | ﹤0.01% |
258,670
+152,379
|
|
||
122
Bank of Montreal
BMO
$90.4B
| $4.8M | ﹤0.01% |
+36,869
|
|
||
123
InMode
INMD
$923M
| $4.77M | ﹤0.01% |
320,318
+300,331
|
|
||
124
Teva Pharmaceuticals
TEVA
$29.6B
| $4.75M | ﹤0.01% |
235,083
+42,093
|
|
||
125
Chewy
CHWY
$13.7B
| $4.71M | ﹤0.01% |
+116,536
|
|