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 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$278M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
$84.4M |
| 3 |
NVIDIA
NVDA
|
$76.9M |
| 4 |
TSMC
TSM
|
$74.9M |
| 5 |
Amazon
AMZN
|
$53.5M |
Top Sells
| 1 |
Apple
AAPL
|
$497M |
| 2 |
Strategy Inc Common Stock Class A
MSTR
|
$73.7M |
| 3 |
Alibaba
BABA
|
$49M |
| 4 |
Advanced Micro Devices
AMD
|
$48.1M |
| 5 |
Uber
UBER
|
$41.8M |
Sector Composition
| 1 | Technology | 22.9% |
| 2 | Consumer Discretionary | 12.26% |
| 3 | Healthcare | 9.52% |
| 4 | Communication Services | 8.42% |
| 5 | Financials | 7.07% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
76
First Solar
FSLR
$21.6B
| $7.01M | ﹤0.01% |
+55,440
| New | +$7.01M |
|
77
Petrobras
PBR
$79.3B
| $6.94M | ﹤0.01% |
483,943
+114,123
| +31% | +$1.64M |
|
78
ServiceNow
NOW
$191B
| $6.75M | ﹤0.01% |
+8,483
| New | +$6.75M |
|
79
FirstEnergy
FE
$25.1B
| $6.69M | ﹤0.01% |
165,479
+138,670
| +517% | +$5.6M |
|
|
TIGR
80
UP Fintech Holding
TIGR
$2.31B
| $6.66M | ﹤0.01% |
775,806
+359,571
| +86% | +$3.09M |
|
81
Canadian Pacific Kansas City
CP
$70.4B
| $6.54M | ﹤0.01% |
93,219
+32,650
| +54% | +$2.29M |
|
82
Xtrackers Harvest CSI 300 China A-Shares ETF
ASHR
$2.31B
| $6.53M | ﹤0.01% |
+245,737
| New | +$6.53M |
|
83
Direxion Daily FTSE China Bear 3X Shares
YANG
$184M
| $6.52M | ﹤0.01% |
164,639
+157,240
| +2,125% | +$6.23M |
|
84
Crown Castle
CCI
$42.3B
| $6.52M | ﹤0.01% |
+62,532
| New | +$6.52M |
|
85
Twilio
TWLO
$16.1B
| $6.45M | ﹤0.01% |
65,891
-55,657
| -46% | -$5.45M |
|
86
Teva Pharmaceuticals
TEVA
$21.5B
| $6.41M | ﹤0.01% |
+416,763
| New | +$6.41M |
|
87
Zscaler
ZS
$42.1B
| $6.2M | ﹤0.01% |
+31,247
| New | +$6.2M |
|
88
Materials Select Sector SPDR Fund
XLB
$5.46B
| $6.19M | ﹤0.01% |
71,945
-28,930
| -29% | -$2.49M |
|
89
ScottsMiracle-Gro
SMG
$3.48B
| $6.02M | ﹤0.01% |
109,665
+105,820
| +2,752% | +$5.81M |
|
90
Western Digital
WDC
$29.8B
| $5.88M | ﹤0.01% |
145,433
+67,965
| +88% | +$1.74M |
|
91
Eastman Chemical
EMN
$7.76B
| $5.8M | ﹤0.01% |
+65,878
| New | +$5.8M |
|
92
PNC Financial Services
PNC
$80.7B
| $5.67M | ﹤0.01% |
32,279
+24,060
| +293% | +$4.23M |
|
93
SPDR S&P Bank ETF
KBE
$1.6B
| $5.59M | ﹤0.01% |
105,468
+38,478
| +57% | +$2.04M |
|
94
Moderna
MRNA
$9.36B
| $5.42M | ﹤0.01% |
191,230
+87,027
| +84% | +$2.47M |
|
95
Rivian
RIVN
$17.5B
| $5.38M | ﹤0.01% |
432,137
-236,133
| -35% | -$2.94M |
|
96
Walmart
WMT
$793B
| $5.16M | ﹤0.01% |
58,815
+32,629
| +125% | +$2.86M |
|
97
ZIM Integrated Shipping Services
ZIM
$1.63B
| $5.06M | ﹤0.01% |
346,780
+270,812
| +356% | +$3.95M |
|
98
American Airlines Group
AAL
$8.87B
| $5.05M | ﹤0.01% |
478,235
+226,224
| +90% | +$2.39M |
|
99
AGNC Investment
AGNC
$10.4B
| $5.02M | ﹤0.01% |
524,407
+421,009
| +407% | +$4.03M |
|
100
ARK 21Shares Bitcoin ETF
ARKB
$1.79B
| $5M | ﹤0.01% |
60,840
+208
| +0.3% | +$17.1K |
|