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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
+8.29%
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
$114B
AUM Growth
+$21.9B
Cap. Flow
+$10.1B
Cap. Flow %
8.87%
Top 10 Hldgs %
37.97%
Holding
10,803
New
1,536
Increased
3,665
Reduced
3,633
Closed
1,729

Top Buys

Rank Stock Value
1
WMT icon
Walmart Inc
WMT
+$43.6M
2
AAPL icon
Apple
AAPL
+$40.9M
3
OIH icon
VanEck Oil Services ETF
OIH
+$37.7M
4
C icon
Citigroup
C
+$34.2M
5
TLT icon
iShares 20+ Year Treasury Bond ETF
TLT
+$32.7M

Top Sells

Rank Stock Value
1
AMZN icon
Amazon
AMZN
+$189M
2
QQQ icon
Invesco QQQ Trust
QQQ
+$123M
3
NVDA icon
NVIDIA
NVDA
+$115M
4
TSLA icon
Tesla
TSLA
+$52M
5
META icon
Meta Platforms (Facebook)
META
+$49M

Sector Composition

Rank Sector Weight
1 Technology 0.42%
2 Consumer Discretionary 0.2%
3 Healthcare 0.17%
4 Industrials 0.15%
5 Communication Services 0.13%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
FLNC icon
9326
Fluence Energy
FLNC
$1.78B
– –
-28,444
Closed -$565K
FLOT icon
9327
iShares Floating Rate Bond ETF
FLOT
$10.1B
– –
-99
Closed -$4K
FLR icon
9328
Fluor
FLR
$7.29B
– –
-33,887
Closed -$1.17M
FLUX icon
9329
Flux Power
FLUX
$12.6M
– –
-7,775
Closed -$43.3K
FMX icon
9330
Fomento Económico Mexicano
FMX
$43.3B
– –
-24,242
Closed -$2.12M
FNGR icon
9331
PUT
FingerMotion
FNGR
$16.2M
– –
-2,900
Closed -$8K
FORA
9332
DELISTED
Forian
FORA
– –
-16
Closed –
FOXF icon
9333
Fox Factory Holding Corp
FOXF
$776M
– –
-261
Closed -$30K
FPH icon
9334
Five Point Holdings
FPH
$379M
– –
-552
Closed -$1.29K
FPXI icon
9335
First Trust Exchange-Traded Fund II First Trust International Equity Opportunities ETF
FPXI
$279M
– –
-1,100
Closed -$42K
FRHC icon
9336
CALL
Freedom Holding
FRHC
$9.61B
– –
-500
Closed -$29K
FRHC icon
9337
Freedom Holding
FRHC
$9.61B
– –
-743
Closed -$50.3K
FRO icon
9338
Frontline
FRO
$8.75B
– –
-19,218
Closed -$302K
FRSX
9339
Foresight Autonomous Holdings
FRSX
$4.03M
$0 ﹤0.01%
10
-2
-17% -$141
FSLR icon
9340
First Solar
FSLR
$21.8B
– –
-74,516
Closed -$13.6M
FSLY icon
9341
Fastly Inc
FSLY
$3.17B
– –
-3,628
Closed -$46.1K
FSTR icon
9342
Foster
FSTR
$443M
– –
-1,381
Closed -$16.4K
FTAI icon
9343
FTAI Aviation
FTAI
$22.2B
– –
-14,579
Closed -$344K
FTCI icon
9344
FTC Solar
FTCI
$47.4M
– –
-6,474
Closed -$172K
FTEK icon
9345
Fuel Tech
FTEK
$48.2M
– –
-827
Closed -$1.18K
FTGC icon
9346
First Trust Global Tactical Commodity Strategy Fund
FTGC
$2.99B
– –
-108
Closed -$2.57K
FTFT icon
9347
Future FinTech Group
FTFT
$2.2M
– –
-9
Closed -$2.64K
FTI icon
9348
TechnipFMC
FTI
$30.6B
– –
-104,315
Closed -$1.41M
FUL icon
9349
CALL
H.B. Fuller
FUL
$3B
– –
-2,700
Closed -$193K
FUL icon
9350
PUT
H.B. Fuller
FUL
$3B
– –
-500
Closed -$35K
372 373
374
375 376

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Simplex Trading's Q1 2023 Portfolio in Review

As of Q1 2023, Simplex Trading held 10,803 positions worth $114B, up 24% from $91.9B the previous quarter. Its ten largest holdings account for 38% of the portfolio.

Simplex Trading deployed $10.1B of net new capital in Q1 2023, opening 1,536 new positions and adding to 3,665 existing holdings. Its largest new stake was Walmart Inc: 918,957 shares worth $45.2M.

By sector, the portfolio is most concentrated in Technology at 0.42% of assets, up from 0.35% a quarter earlier, followed by Consumer Discretionary and Healthcare.

On the sell side, the largest reduction was Meta Platforms (Facebook), an estimated $49M trimmed.

  • Simplex Trading's largest Q1 2023 buy was Walmart Inc: 918,957 shares worth $45.2M.
  • Simplex Trading added most to Apple in Q1 2023, an estimated $40.9M increase.
  • Simplex Trading's biggest Q1 2023 reduction was Meta Platforms (Facebook), cutting an estimated $49M.
  • Simplex Trading fully exited Amazon in Q1 2023, selling an estimated $189M.
  • Simplex Trading's ten largest holdings make up 38% of its $114B portfolio in Q1 2023.
  • Simplex Trading opened 1,536 new positions and closed 1,729 in Q1 2023.
  • Simplex Trading's portfolio value rose 24% quarter-over-quarter to $114B.

Based on Simplex Trading's 13F filing for Q1 2023, filed 27 Apr 2023.