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
+6.46%
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
$122B
AUM Growth
+$7.84B
Cap. Flow
-$3.39B
Cap. Flow %
-2.78%
Top 10 Hldgs %
42.57%
Holding
10,535
New
1,474
Increased
3,350
Reduced
3,913
Closed
1,517

Top Buys

Rank Stock Value
1
MSFT icon
Microsoft
MSFT
+$53.9M
2
TLT icon
iShares 20+ Year Treasury Bond ETF
TLT
+$52.9M
3
NVDA icon
NVIDIA
NVDA
+$47.1M
4
PYPL icon
PayPal
PYPL
+$41.7M
5
GOOG icon
Alphabet (Google) Class C
GOOG
+$28.4M

Top Sells

Rank Stock Value
1
AAPL icon
Apple
AAPL
+$51.4M
2
WMT icon
Walmart Inc
WMT
+$46.4M
3
OIH icon
VanEck Oil Services ETF
OIH
+$34.2M
4
ADBE icon
Adobe
ADBE
+$33.5M
5
SBUX icon
Starbucks
SBUX
+$26.8M

Sector Composition

Rank Sector Weight
1 Technology 0.41%
2 Healthcare 0.21%
3 Consumer Discretionary 0.21%
4 Communication Services 0.2%
5 Financials 0.15%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
RDVT icon
9751
Red Violet
RDVT
$893M
– –
-85
Closed -$1K
RDWR icon
9752
CALL
Radware
RDWR
$1.24B
– –
-15,000
Closed -$323K
REAX icon
9753
Real Brokerage
REAX
$410M
$0 ﹤0.01%
25
-104
-81% -$138
REFR icon
9754
Research Frontiers
REFR
$16.9M
$0 ﹤0.01%
+100
New +$162
RELL icon
9755
Richardson Electronics
RELL
$262M
– –
-309
Closed -$5.34K
RELL icon
9756
PUT
Richardson Electronics
RELL
$262M
– –
-100
Closed -$2K
RELY icon
9757
Remitly
RELY
$4.87B
– –
-26,613
Closed -$484K
RETL icon
9758
Direxion Daily Retail Bull 3X ETF
RETL
$31.9M
$0 ﹤0.01%
+32
New +$207
REVG
9759
PUT
DELISTED
REV Group
REVG
– –
-1,400
Closed -$16K
REW icon
9760
Proshares UltraShort Technology
REW
$3.3M
$0 ﹤0.01%
+1
New +$101
REXR icon
9761
Rexford Industrial Realty
REXR
$8.3B
– –
-16
Closed -$873
RGA icon
9762
Reinsurance Group of America
RGA
$15.4B
– –
-274
Closed -$39K
RH icon
9763
RH
RH
$3.31B
– –
-8,208
Closed -$2.15M
RIG icon
9764
Transocean
RIG
$5.87B
– –
-397,864
Closed -$2.46M
RLGT icon
9765
Radiant Logistics
RLGT
$424M
– –
-31,458
Closed -$203K
RLGT icon
9766
PUT
Radiant Logistics
RLGT
$424M
– –
-157,200
Closed -$1.03M
RMAX icon
9767
PUT
RE/MAX Holdings
RMAX
$218M
– –
-2,000
Closed -$37K
RMR icon
9768
PUT
The RMR Group
RMR
$344M
– –
-900
Closed -$23K
RMTI icon
9769
Rockwell Medical
RMTI
$25.4M
– –
-933
Closed -$28.7K
RNR icon
9770
PUT
RenaissanceRe
RNR
$13.6B
– –
-100
Closed -$20K
RNST icon
9771
CALL
Renasant Corp
RNST
$4B
– –
-400
Closed -$12K
RNW icon
9772
ReNew
RNW
$2.27B
– –
-297,343
Closed -$1.63M
ROBO icon
9773
ROBO Global Robotics & Automation Index ETF
ROBO
$1.94B
– –
-119
Closed -$6K
ROCK icon
9774
Gibraltar Industries
ROCK
$1.32B
– –
-648
Closed -$35K
RPAY icon
9775
CALL
Repay Holdings
RPAY
$303M
– –
-1,600
Closed -$10K
389 390
391
392 393

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 Q2 2023 Portfolio in Review

As of Q2 2023, Simplex Trading held 10,535 positions worth $122B, up 6.9% from $114B the previous quarter. Its ten largest holdings account for 43% of the portfolio.

Simplex Trading's Q2 2023 filing shows 1,474 new, 3,350 increased, 3,913 reduced and 1,517 closed positions. Its largest new stake was Microsoft: 171,935 shares worth $58.5M. The largest sale was Apple, an estimated $51.4M.

By sector, the portfolio is most concentrated in Technology at 0.41% of assets, down from 0.42% a quarter earlier, followed by Healthcare and Consumer Discretionary.

  • Simplex Trading's largest Q2 2023 buy was Microsoft: 171,935 shares worth $58.5M.
  • Simplex Trading added most to iShares 20+ Year Treasury Bond ETF in Q2 2023, an estimated $52.9M increase.
  • Simplex Trading's biggest Q2 2023 reduction was Adobe, cutting an estimated $33.5M.
  • Simplex Trading fully exited Apple in Q2 2023, selling an estimated $51.4M.
  • Simplex Trading's ten largest holdings make up 43% of its $122B portfolio in Q2 2023.
  • Simplex Trading opened 1,474 new positions and closed 1,517 in Q2 2023.
  • Simplex Trading's portfolio value rose 6.9% quarter-over-quarter to $122B.

Based on Simplex Trading's 13F filing for Q2 2023, filed 4 Aug 2023.