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 | +$278M | |
| 2 | +$84.4M | |
| 3 | +$76.9M | |
| 4 |
TSMC
TSM
|
+$74.9M |
| 5 |
Amazon
AMZN
|
+$53.5M |
Top Sells
| 1 | +$497M | |
| 2 | +$73.7M | |
| 3 | +$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 |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
51
Edison International
EIX
$21.8B
| $10.4M | 0.01% |
176,880
+176,769
|
|
||
52
United Parcel Service
UPS
$78.1B
| $10.3M | 0.01% |
+93,523
|
|
||
53
Honeywell
HON
$125B
| $9.99M | 0.01% |
47,205
+8,228
|
|
||
54
General Motors
GM
$63.2B
| $9.93M | 0.01% |
211,047
+198,942
|
|
||
55
JD.com
JD
$45.2B
| $9.92M | 0.01% |
241,198
-68,469
|
|
||
56
Snap
SNAP
$12.5B
| $9.88M | 0.01% |
+1,134,433
|
|
||
57
iShares Gold Trust
IAU
$60.4B
| $9.34M | 0.01% |
158,432
+91,102
|
|
||
58
Rio Tinto
RIO
$112B
| $9.08M | 0.01% |
+151,186
|
|
||
59
Fidelity Wise Origin Bitcoin Fund
FBTC
$13.6B
| $8.57M | 0.01% |
119,045
-44,699
|
|
||
60
Strategy Inc
MSTR
$72B
| $8.45M | 0.01% |
29,313
-255,709
|
|
||
61
Albemarle
ALB
$10.7B
| $8.43M | 0.01% |
117,090
-8,985
|
|
||
62
Boston Scientific
BSX
$146B
| $8.24M | 0.01% |
+81,674
|
|
||
63
iShares National Muni Bond ETF
MUB
$40.2B
| $8.22M | 0.01% |
77,947
-18,707
|
|
||
64
Target
TGT
$40.7B
| $8.15M | 0.01% |
78,101
+34,823
|
|
||
65
Iris Energy
IREN
$19.2B
| $7.84M | 0.01% |
1,287,755
+251,955
|
|
||
66
Cameco
CCJ
$41.7B
| $7.75M | 0.01% |
188,210
+131,414
|
|
||
67
Truist Financial
TFC
$55.9B
| $7.66M | ﹤0.01% |
+186,150
|
|
||
68
3M
MMM
$86B
| $7.66M | ﹤0.01% |
52,139
+46,594
|
|
||
69
Enphase Energy
ENPH
$3.99B
| $7.44M | ﹤0.01% |
+119,961
|
|
||
70
Mercado Libre
MELI
$114B
| $7.41M | ﹤0.01% |
3,796
+1,244
|
|
||
71
Dollar General
DG
$21.9B
| $7.24M | ﹤0.01% |
82,295
+45,501
|
|
||
72
Consumers Staples Select Sector SPDR Fund
XLP
$14.9B
| $7.21M | ﹤0.01% |
88,343
+25,500
|
|
||
73
iShares MSCI Emerging Markets ETF
EEM
$20.9B
| $7.16M | ﹤0.01% |
163,914
-1,933
|
|
||
74
Nice
NICE
$8.03B
| $7.16M | ﹤0.01% |
46,451
+27,970
|
|
||
75
AST SpaceMobile
ASTS
$19B
| $7.03M | ﹤0.01% |
309,098
+36,850
|
|