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 |
NVIDIA
NVDA
|
$216M |
| 2 |
Apple
AAPL
|
$159M |
| 3 |
Broadcom
AVGO
|
$128M |
| 4 |
Booking.com
BKNG
|
$62.2M |
| 5 |
SPDR S&P 500 ETF Trust
SPY
|
$61.9M |
Top Sells
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$141M |
| 2 |
Amazon
AMZN
|
$53.1M |
| 3 |
TSMC
TSM
|
$45.7M |
| 4 |
Netflix
NFLX
|
$45.3M |
| 5 |
Pfizer
PFE
|
$38.3M |
Sector Composition
| 1 | Technology | 34.74% |
| 2 | Communication Services | 9% |
| 3 | Consumer Discretionary | 8.67% |
| 4 | Healthcare | 8.07% |
| 5 | Financials | 6.4% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
101
DraftKings
DKNG
$23.7B
| $5.71M | ﹤0.01% |
133,048
+67,813
| +104% | +$2.91M |
|
102
Seagate
STX
$37.5B
| $5.39M | ﹤0.01% |
+37,369
| New | +$5.39M |
|
103
Abbott
ABT
$230B
| $5.39M | ﹤0.01% |
+39,639
| New | +$5.39M |
|
104
GSK
GSK
$79.3B
| $5.21M | ﹤0.01% |
+135,595
| New | +$5.21M |
|
105
MongoDB
MDB
$25.5B
| $5.05M | ﹤0.01% |
+24,049
| New | +$5.05M |
|
106
iShares MSCI China ETF
MCHI
$7.91B
| $5.02M | ﹤0.01% |
+91,103
| New | +$5.02M |
|
107
Eos Energy Enterprises
EOSE
$1.98B
| $4.98M | ﹤0.01% |
972,664
+61,948
| +7% | +$317K |
|
108
C3.ai
AI
$2.29B
| $4.96M | ﹤0.01% |
201,899
+94,356
| +88% | +$2.32M |
|
|
TIGR
109
UP Fintech Holding
TIGR
$2.31B
| $4.87M | ﹤0.01% |
504,169
-271,637
| -35% | -$2.62M |
|
110
ServiceNow
NOW
$191B
| $4.81M | ﹤0.01% |
4,675
-3,808
| -45% | -$3.91M |
|
111
BigBear.ai
BBAI
$1.82B
| $4.79M | ﹤0.01% |
705,719
+533,466
| +310% | +$3.62M |
|
112
Woodward
WWD
$14.7B
| $4.75M | ﹤0.01% |
19,377
+18,266
| +1,644% | +$4.48M |
|
113
Lyft
LYFT
$7.02B
| $4.74M | ﹤0.01% |
300,888
+294,699
| +4,762% | +$4.64M |
|
114
Direxion Daily Small Cap Bull 3x Shares
TNA
$2.13B
| $4.72M | ﹤0.01% |
140,768
+96,716
| +220% | +$3.24M |
|
115
SPDR S&P Bank ETF
KBE
$1.6B
| $4.72M | ﹤0.01% |
84,604
-20,864
| -20% | -$1.16M |
|
116
Hilton Worldwide
HLT
$64.7B
| $4.67M | ﹤0.01% |
17,550
+15,137
| +627% | +$4.03M |
|
117
YieldMax MSTR Option Income Strategy ETF
MSTY
$4.63B
| $4.58M | ﹤0.01% |
206,692
+83,883
| +68% | +$1.86M |
|
118
CleanSpark
CLSK
$2.65B
| $4.54M | ﹤0.01% |
411,956
-117,687
| -22% | -$1.3M |
|
119
Oscar Health
OSCR
$4.57B
| $4.52M | ﹤0.01% |
+210,776
| New | +$4.52M |
|
120
Teladoc Health
TDOC
$1.37B
| $4.42M | ﹤0.01% |
507,190
+292,251
| +136% | +$2.55M |
|
121
XPeng
XPEV
$19.3B
| $4.4M | ﹤0.01% |
+246,121
| New | +$4.4M |
|
|
QXO
122
QXO Inc
QXO
$13.8B
| $4.37M | ﹤0.01% |
202,888
+68,303
| +51% | +$1.47M |
|
123
Sunrun
RUN
$3.8B
| $4.34M | ﹤0.01% |
530,872
+462,813
| +680% | +$3.79M |
|
124
Canadian Pacific Kansas City
CP
$70.4B
| $4.32M | ﹤0.01% |
54,477
-38,742
| -42% | -$3.07M |
|
125
BP
BP
$88.8B
| $4.24M | ﹤0.01% |
+141,526
| New | +$4.24M |
|