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
+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
PIPR icon
9851
PUT
Piper Sandler
PIPR
$5.12B
– –
-400
Closed -$13K
PK icon
9852
Park Hotels & Resorts
PK
$2.94B
– –
-1,240
Closed -$16.3K
PKX icon
9853
POSCO
PKX
$16.1B
– –
-128
Closed -$7.89K
PLAB icon
9854
Photronics
PLAB
$1.82B
– –
-5,766
Closed -$101K
PLMR icon
9855
Palomar
PLMR
$3.42B
– –
-44
Closed -$2.36K
PLNT icon
9856
Planet Fitness
PLNT
$4.29B
– –
-5,816
Closed -$464K
PLSE icon
9857
Pulse Biosciences
PLSE
$2.15B
– –
-9,202
Closed -$27.8K
PLSE icon
9858
PUT
Pulse Biosciences
PLSE
$2.15B
– –
-20,700
Closed -$57K
PLUR icon
9859
Pluri
PLUR
$19.3M
– –
-1,108
Closed -$9.16K
PLUR icon
9860
PUT
Pluri
PLUR
$19.3M
– –
-163
Closed -$1K
PLX icon
9861
PUT
Protalix BioTherapeutics
PLX
$191M
– –
-1,100
Closed -$1K
PMCB icon
9862
CALL
PharmaCyte Biotech
PMCB
$6.49M
– –
-74,200
Closed -$217K
PMVP icon
9863
PMV Pharmaceuticals
PMVP
$70.9M
– –
-982
Closed -$8K
PMVP icon
9864
PUT
PMV Pharmaceuticals
PMVP
$70.9M
– –
-4,700
Closed -$40K
PNC icon
9865
PNC Financial Services
PNC
$99.5B
– –
-22,654
Closed -$3.42M
PNFP icon
9866
Pinnacle Financial Partners Inc
PNFP
$15.1B
– –
-138
Closed -$9.68K
PNR icon
9867
Pentair
PNR
$10B
– –
-9,393
Closed -$499K
PODD icon
9868
Insulet
PODD
$11B
– –
-429
Closed -$127K
POOL icon
9869
Pool Corp
POOL
$6.68B
– –
-1,473
Closed -$523K
PRA
9870
CALL
DELISTED
ProAssurance
PRA
– –
-500
Closed -$8K
PRAA icon
9871
CALL
PRA Group
PRAA
$616M
– –
-16,500
Closed -$557K
PRAX icon
9872
Praxis Precision Medicines
PRAX
$8.99B
– –
-81
Closed -$3.42K
PRGS icon
9873
Progress Software
PRGS
$1.51B
– –
-3,434
Closed -$191K
PRGS icon
9874
PUT
Progress Software
PRGS
$1.51B
– –
-7,000
Closed -$353K
PRG icon
9875
PROG Holdings
PRG
$1.75B
– –
-3,061
Closed -$68.8K
393 394
395
396 397

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 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.