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 | +$73.1M | |
| 2 | +$51.8M | |
| 3 | +$46M | |
| 4 |
Meta Platforms (Facebook)
META
|
+$41.8M |
| 5 |
Alibaba
BABA
|
+$37.1M |
Top Sells
| 1 | +$262M | |
| 2 | +$194M | |
| 3 | +$149M | |
| 4 |
Apple
AAPL
|
+$119M |
| 5 |
Amazon
AMZN
|
+$107M |
Sector Composition
| 1 | Technology | 29.59% |
| 2 | Consumer Discretionary | 10.67% |
| 3 | Healthcare | 10.12% |
| 4 | Industrials | 8.86% |
| 5 | Communication Services | 7.94% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
51
Snowflake
SNOW
$61.1B
| $13.6M | 0.38% |
62,009
+41,711
|
|
||
52
Boston Scientific
BSX
$103B
| $13.5M | 0.38% |
+141,877
|
|
||
53
Micron Technology
MU
$480B
| $13.3M | 0.37% |
46,589
-185,024
|
|
||
54
Goldman Sachs
GS
$232B
| $13.3M | 0.37% |
+15,075
|
|
||
55
Mercado Libre
MELI
$84.7B
| $13.1M | 0.37% |
6,495
+2,435
|
|
||
56
ProShares Ultra Silver
AGQ
$2.04B
| $12.6M | 0.36% |
81,434
-26,947
|
|
||
57
Snap
SNAP
$7.7B
| $12.3M | 0.35% |
1,527,426
+456,916
|
|
||
58
Alphabet (Google) Class A
GOOGL
$3.66T
| $12.1M | 0.34% |
38,768
-232,207
|
|
||
59
Advanced Micro Devices
AMD
$315B
| $12.1M | 0.34% |
56,475
+46,200
|
|
||
60
Energy Transfer Partners
ET
$64.5B
| $12.1M | 0.34% |
732,464
+402,579
|
|
||
61
Avis
CAR
$3.55B
| $12M | 0.34% |
+93,201
|
|
||
62
Morgan Stanley
MS
$246B
| $11.9M | 0.34% |
+67,226
|
|
||
63
United Parcel Service
UPS
$82.5B
| $11.8M | 0.33% |
+118,908
|
|
||
64
3M
MMM
$79.5B
| $11.8M | 0.33% |
73,592
+5,959
|
|
||
65
Amplify Junior Silver Miners ETF
SILJ
$4.79B
| $11.6M | 0.33% |
+418,618
|
|
||
|
B
66
Barrick Mining
B
$70.9B
| $11.2M | 0.31% |
+256,167
|
|
||
67
Southwest Airlines
LUV
$19B
| $11.1M | 0.31% |
+268,783
|
|
||
68
Confluent
CFLT
$11B
| $10.8M | 0.3% |
+358,415
|
|
||
69
American Airlines Group
AAL
$6.8B
| $10.7M | 0.3% |
696,625
+315,057
|
|
||
70
FedEx
FDX
$82.7B
| $10.6M | 0.3% |
36,761
+26,180
|
|
||
71
Lyft
LYFT
$5.2B
| $10.5M | 0.3% |
543,126
+332,078
|
|
||
72
D-Wave Quantum
QBTS
$6.49B
| $10.1M | 0.28% |
386,080
-63,521
|
|
||
73
iShares Bitcoin Trust
IBIT
$55.5B
| $10.1M | 0.28% |
202,920
-1,325,695
|
|
||
74
ProShares UltraPro Short QQQ
SQQQ
$2.66B
| $10M | 0.28% |
146,477
+86,179
|
|
||
75
Bilibili
BILI
$10.3B
| $9.95M | 0.28% |
404,527
-4,064
|
|