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
-4.86%
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
$88.5B
AUM Growth
-$5.62B
Cap. Flow
-$2.04B
Cap. Flow %
-2.3%
Top 10 Hldgs %
38.07%
Holding
11,570
New
1,564
Increased
4,281
Reduced
3,851
Closed
1,575

Top Buys

Rank Stock Value
1
MSFT icon
Microsoft
MSFT
+$114M
2
NVDA icon
NVIDIA
NVDA
+$85.9M
3
C icon
Citigroup
C
+$61.5M
4
BRK.B icon
Berkshire Hathaway Class B
BRK.B
+$45.5M
5
PFE icon
Pfizer
PFE
+$41.6M

Top Sells

Rank Stock Value
1
AAPL icon
Apple
AAPL
+$467M
2
VOO icon
Vanguard S&P 500 ETF
VOO
+$71.2M
3
META icon
Meta Platforms (Facebook)
META
+$47.6M
4
INTC icon
Intel
INTC
+$41.9M
5
TSM icon
TSMC
TSM
+$35.9M

Sector Composition

Rank Sector Weight
1 Technology 0.51%
2 Financials 0.35%
3 Consumer Discretionary 0.3%
4 Healthcare 0.25%
5 Industrials 0.18%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
NWPX icon
10576
PUT
NWPX Infrastructure Inc
NWPX
$1.28B
– –
-6,400
Closed -$191K
NZAC icon
10577
State Street SPDR MSCI ACWI Climate Paris Aligned ETF
NZAC
$189M
– –
-882
Closed -$23K
TEAD
10578
Teads Holding Co
TEAD
$73.6M
– –
-38,790
Closed -$189K
TWAV
10579
TaoWeave Inc
TWAV
$4.35M
$0 ﹤0.01%
+1
New +$158
OCFC icon
10580
CALL
OceanFirst Financial
OCFC
$1.69B
– –
-100
Closed -$1K
OCFC icon
10581
OceanFirst Financial
OCFC
$1.69B
– –
-722
Closed -$13K
OCFC icon
10582
PUT
OceanFirst Financial
OCFC
$1.69B
– –
-2,500
Closed -$47K
OESX icon
10583
CALL
Orion Energy Systems
OESX
$42.4M
– –
-240
Closed -$4K
OFG icon
10584
CALL
OFG Bancorp
OFG
$2.22B
– –
-100
Closed -$2K
OGS icon
10585
ONE Gas
OGS
$5.02B
– –
-741
Closed -$59.7K
OKTA icon
10586
Okta
OKTA
$23.7B
– –
-34,340
Closed -$2.95M
OLMA icon
10587
Olema Pharmaceuticals
OLMA
$1.03B
$0 ﹤0.01%
204
+145
+246% +$615
OMAB icon
10588
CALL
Grupo Aeroportuario Centro Norte
OMAB
$5.03B
– –
-2,200
Closed -$6K
OMC icon
10589
Omnicom Group
OMC
$22.2B
– –
-12,653
Closed -$858K
ONLN icon
10590
ProShares Online Retail ETF
ONLN
$61.2M
– –
-38
Closed -$1K
ONTF
10591
DELISTED
ON24
ONTF
– –
-186
Closed -$1.78K
OOMA icon
10592
Ooma
OOMA
$532M
– –
-360
Closed -$4.47K
OOMA icon
10593
PUT
Ooma
OOMA
$532M
– –
-6,300
Closed -$74K
OOTO
10594
DELISTED
Direxion Daily Travel & Vacation Bull 2X Shares
OOTO
– –
-100
Closed –
OPCH icon
10595
Option Care Health
OPCH
$3.31B
– –
-748
Closed -$23.9K
OPK icon
10596
Opko Health
OPK
$883M
– –
-97,796
Closed -$231K
OPRA
10597
Opera Ltd
OPRA
$1.62B
– –
-985
Closed -$4.73K
OPRT icon
10598
CALL
Oportun Financial
OPRT
$244M
– –
-1,200
Closed -$9K
OPTN
10599
DELISTED
OptiNose
OPTN
– –
-11
Closed -$604
ORC
10600
Orchid Island Capital
ORC
$1.32B
– –
-6,251
Closed -$86.7K
422 423
424
425 426

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 Q3 2022 Portfolio in Review

As of Q3 2022, Simplex Trading held 11,570 positions worth $88.5B, down 6% from $94.1B the previous quarter. Its ten largest holdings account for 38% of the portfolio.

Simplex Trading's Q3 2022 filing shows 1,564 new, 4,281 increased, 3,851 reduced and 1,575 closed positions. Its largest new stake was Microsoft: 432,062 shares worth $101M. The largest sale was Apple, an estimated $467M.

By sector, the portfolio is most concentrated in Technology at 0.51% of assets, down from 0.84% a quarter earlier, followed by Financials and Consumer Discretionary.

  • Simplex Trading's largest Q3 2022 buy was Microsoft: 432,062 shares worth $101M.
  • Simplex Trading added most to NVIDIA in Q3 2022, an estimated $85.9M increase.
  • Simplex Trading's biggest Q3 2022 reduction was Apple, cutting an estimated $467M.
  • Simplex Trading fully exited iShares Core S&P 500 ETF in Q3 2022, selling an estimated $34.3M.
  • Simplex Trading's ten largest holdings make up 38% of its $88.5B portfolio in Q3 2022.
  • Simplex Trading opened 1,564 new positions and closed 1,575 in Q3 2022.
  • Simplex Trading's portfolio value fell 6% quarter-over-quarter to $88.5B.

Based on Simplex Trading's 13F filing for Q3 2022, filed 4 Nov 2022.