We are live on ! Find out more
Simplex Trading

Simplex Trading Portfolio holdings

AUM $149B
1-Year Est. Return 62.07%
 

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.

This Fund
S&P 500
This Quarter Est. Return
+4.79%
1 Year Est. Return
+62.07%
3 Year Est. Return
+116.86%
5 Year Est. Return
+116.02%
10 Year Est. Return
+774.44%
AUM
$179B
AUM Growth
+$8.24B
Cap. Flow
+$1.08B
Cap. Flow %
0.6%
Top 10 Hldgs %
48.72%
Holding
10,008
New
1,520
Increased
3,222
Reduced
3,616
Closed
1,504

Top Buys

Rank Stock Value
1
AAPL icon
Apple
AAPL
+$552M
2
MSTR icon
Strategy Inc
MSTR
+$85.8M
3
MSTX
Defiance Daily Target 2x Long MSTR ETF
MSTX
+$48.1M
4
INTC icon
Intel
INTC
+$45.4M
5
UBER icon
Uber
UBER
+$43M

Top Sells

Rank Stock Value
1
NVDA icon
NVIDIA
NVDA
+$133M
2
PDD icon
Pinduoduo
PDD
+$82.6M
3
BA icon
Boeing
BA
+$49.8M
4
KWEB icon
KraneShares CSI China Internet ETF
KWEB
+$45.1M
5
MSFT icon
Microsoft
MSFT
+$41M

Sector Composition

Rank Sector Weight
1 Technology 0.68%
2 Consumer Discretionary 0.23%
3 Healthcare 0.19%
4 Financials 0.13%
5 Communication Services 0.11%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
GGLL icon
8901
Direxion Daily GOOGL Bull 2X ETF
GGLL
$827M
– –
-3,649
Closed -$135K
GGLS icon
8902
Direxion Daily GOOGL Bear 1X ETF
GGLS
$14.5M
– –
-20
Closed -$2K
GGR icon
8903
Gogoro
GGR
$70.7M
$0 ﹤0.01%
1
-83
-99% -$895
GIC icon
8904
CALL
Global Industrial
GIC
$1.32B
– –
-200
Closed -$6K
GIC icon
8905
Global Industrial
GIC
$1.32B
– –
-9
Closed –
GIL icon
8906
Gildan
GIL
$9.18B
– –
-15
Closed -$723
GILT icon
8907
PUT
Gilat Satellite Networks
GILT
$859M
– –
-11,200
Closed -$59K
GKOS icon
8908
Glaukos
GKOS
$8.94B
– –
-3,079
Closed -$424K
GLBS icon
8909
Globus Maritime Ltd
GLBS
$63.5M
$0 ﹤0.01%
415
-10,519
-96% -$16.1K
GLBS icon
8910
PUT
Globus Maritime Ltd
GLBS
$63.5M
– –
-3,200
Closed -$6K
GLOB icon
8911
Globant
GLOB
$1.32B
– –
-995
Closed -$217K
GLOB icon
8912
PUT
Globant
GLOB
$1.32B
– –
-500
Closed -$99K
GLP icon
8913
PUT
Global Partners
GLP
$1.64B
– –
-4,000
Closed -$186K
GLRE icon
8914
CALL
Greenlight Captial
GLRE
$542M
– –
-100
Closed -$1K
GLRE icon
8915
Greenlight Captial
GLRE
$542M
– –
-34
Closed –
GMAB icon
8916
Genmab
GMAB
$17.9B
– –
-2,170
Closed -$47.7K
GNE icon
8917
CALL
Genie Energy
GNE
$384M
– –
-3,100
Closed -$50K
GNE icon
8918
Genie Energy
GNE
$384M
– –
-406
Closed -$6K
GNE icon
8919
PUT
Genie Energy
GNE
$384M
– –
-3,900
Closed -$63K
GNK icon
8920
Genco Shipping & Trading
GNK
$1.12B
– –
-11,753
Closed -$191K
GNOM icon
8921
Global X Genomics & Biotechnology ETF
GNOM
$84.3M
– –
-44
Closed -$1K
GOAU icon
8922
US Global GO Gold and Precious Metal Miners ETF
GOAU
$164M
– –
-185
Closed -$3K
GOOD
8923
Gladstone Commercial Corp
GOOD
$619M
– –
-136
Closed -$2.25K
GOOS
8924
Canada Goose Holdings
GOOS
$896M
– –
-3,453
Closed -$35.3K
GORO icon
8925
Goldgroup Mining Inc.
GORO
$173M
$0 ﹤0.01%
+100
New +$23
355 356
357
358 359

Similar funds

Mitsubishi UFJ Asset Management
Mitsubishi UFJ Asset Management Tokyo, Japan $149B AUM 24.71% 1-Year Est. Return
Creative Planning
Creative Planning Overland Park, Kansas $147B AUM 18.73% 1-Year Est. Return
Jennison Associates
Jennison Associates New York $145B AUM 34.61% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
Sumitomo Mitsui Trust Group
Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $154B AUM 29.96% 1-Year Est. Return
Canada Pension Plan Investment Board
Canada Pension Plan Investment Board Toronto Ontario, Ontario, Canada $155B AUM 29.93% 1-Year Est. Return
Victory Capital Management
Victory Capital Management San Antonio, Texas $156B AUM 27.51% 1-Year Est. Return
First Trust Advisors
First Trust Advisors Wheaton, Illinois $140B AUM 27.84% 1-Year Est. Return

Simplex Trading's Q4 2024 Portfolio in Review

As of Q4 2024, Simplex Trading held 10,008 positions worth $179B, up 4.8% from $170B the previous quarter. Its ten largest holdings account for 49% of the portfolio.

Simplex Trading's Q4 2024 filing shows 1,520 new, 3,222 increased, 3,616 reduced and 1,504 closed positions. Its largest new stake was Strategy Inc: 285,022 shares worth $82.5M. The largest sale was NVIDIA, an estimated $133M.

By sector, the portfolio is most concentrated in Technology at 0.68% of assets, up from 0.4% a quarter earlier, followed by Consumer Discretionary and Healthcare.

  • Simplex Trading's largest Q4 2024 buy was Strategy Inc: 285,022 shares worth $82.5M.
  • Simplex Trading added most to Apple in Q4 2024, an estimated $552M increase.
  • Simplex Trading's biggest Q4 2024 reduction was NVIDIA, cutting an estimated $133M.
  • Simplex Trading fully exited Pinduoduo in Q4 2024, selling an estimated $82.6M.
  • Simplex Trading's ten largest holdings make up 49% of its $179B portfolio in Q4 2024.
  • Simplex Trading opened 1,520 new positions and closed 1,504 in Q4 2024.
  • Simplex Trading's portfolio value rose 4.8% quarter-over-quarter to $179B.

Based on Simplex Trading's 13F filing for Q4 2024, filed 11 Feb 2025.