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
-4.08%
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
$127B
AUM Growth
+$5.5B
Cap. Flow
+$11.9B
Cap. Flow %
9.37%
Top 10 Hldgs %
44.01%
Holding
10,417
New
1,399
Increased
3,690
Reduced
3,364
Closed
1,719

Top Buys

Rank Stock Value
1
AMZN icon
Amazon
AMZN
+$113M
2
GLD icon
SPDR Gold Trust
GLD
+$68.6M
3
NVDA icon
NVIDIA
NVDA
+$63.4M
4
TLT icon
iShares 20+ Year Treasury Bond ETF
TLT
+$55.2M
5
AAPL icon
Apple
AAPL
+$54.9M

Top Sells

Rank Stock Value
1
NFLX icon
Netflix
NFLX
+$27.1M
2
QCOM icon
Qualcomm
QCOM
+$24.6M
3
DIS icon
Walt Disney
DIS
+$21.2M
4
AMD icon
Advanced Micro Devices
AMD
+$18.2M
5
SNOW icon
Snowflake
SNOW
+$16.1M

Sector Composition

Rank Sector Weight
1 Technology 0.44%
2 Consumer Discretionary 0.32%
3 Healthcare 0.22%
4 Financials 0.17%
5 Communication Services 0.15%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
PLYA
9551
PUT
DELISTED
Playa Hotels & Resorts
PLYA
– –
-14,100
Closed -$114K
PMCB icon
9552
PharmaCyte Biotech
PMCB
$6.49M
$0 ﹤0.01%
199
-46,950
-100% -$120K
PMCB icon
9553
PUT
PharmaCyte Biotech
PMCB
$6.49M
– –
-65,800
Closed -$188K
PNQI icon
9554
Invesco NASDAQ Internet ETF
PNQI
$495M
– –
-665
Closed -$20K
PODD icon
9555
Insulet
PODD
$11B
– –
-1,318
Closed -$295K
POET icon
9556
CALL
POET Technologies
POET
$1.31B
– –
-48,400
Closed -$213K
PPTA
9557
PUT
Perpetua Resources
PPTA
$2.23B
– –
-2,700
Closed -$9K
PRA
9558
CALL
DELISTED
ProAssurance
PRA
– –
-400
Closed -$6K
PRA
9559
DELISTED
ProAssurance
PRA
$0 ﹤0.01%
+51
New +$883
PRCH icon
9560
PUT
Porch Group
PRCH
$1.27B
– –
-3,000
Closed -$4K
PRDO icon
9561
PUT
Perdoceo Education
PRDO
$1.93B
– –
-400
Closed -$4K
PRF icon
9562
Invesco FTSE RAFI US 1000 ETF
PRF
$9.68B
– –
-500
Closed -$16K
PRGS icon
9563
Progress Software
PRGS
$1.51B
– –
-2,835
Closed -$166K
PRG icon
9564
PROG Holdings
PRG
$1.75B
– –
-216
Closed -$7.53K
PRIM icon
9565
CALL
Primoris Services
PRIM
$4.92B
– –
-500
Closed -$15K
PRLD icon
9566
Prelude Therapeutics
PRLD
$313M
$0 ﹤0.01%
+31
New +$116
PRM icon
9567
Perimeter Solutions
PRM
$5.56B
– –
-1,386
Closed -$7.73K
PRNT icon
9568
The 3D Printing ETF
PRNT
$57.8M
– –
-498
Closed -$11K
PROF
9569
Profound Medical
PROF
$249M
– –
-142
Closed -$1K
PROF
9570
PUT
Profound Medical
PROF
$249M
– –
-100
Closed -$1K
PROK icon
9571
CALL
ProKidney
PROK
$312M
– –
-300
Closed -$3K
PROK icon
9572
ProKidney
PROK
$312M
$0 ﹤0.01%
+119
New +$1.14K
PRPO icon
9573
Precipio
PRPO
$40.9M
$0 ﹤0.01%
1
-1
-50% -$7
PRU icon
9574
Prudential Financial
PRU
$40.9B
– –
-66
Closed -$6.24K
PSCH icon
9575
Invesco S&P SmallCap Health Care ETF
PSCH
$162M
– –
-84
Closed -$3K
381 382
383
384 385

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 2023 Portfolio in Review

As of Q3 2023, Simplex Trading held 10,417 positions worth $127B, up 4.5% from $122B the previous quarter. Its ten largest holdings account for 44% of the portfolio.

Simplex Trading deployed $11.9B of net new capital in Q3 2023, opening 1,399 new positions and adding to 3,690 existing holdings. Its largest new stake was Amazon: 841,102 shares worth $107M.

By sector, the portfolio is most concentrated in Technology at 0.44% of assets, up from 0.41% a quarter earlier, followed by Consumer Discretionary and Healthcare.

On the sell side, the largest reduction was Netflix, an estimated $27.1M trimmed.

  • Simplex Trading's largest Q3 2023 buy was Amazon: 841,102 shares worth $107M.
  • Simplex Trading added most to SPDR Gold Trust in Q3 2023, an estimated $68.6M increase.
  • Simplex Trading's biggest Q3 2023 reduction was Netflix, cutting an estimated $27.1M.
  • Simplex Trading fully exited Qualcomm in Q3 2023, selling an estimated $24.6M.
  • Simplex Trading's ten largest holdings make up 44% of its $127B portfolio in Q3 2023.
  • Simplex Trading opened 1,399 new positions and closed 1,719 in Q3 2023.
  • Simplex Trading's portfolio value rose 4.5% quarter-over-quarter to $127B.

Based on Simplex Trading's 13F filing for Q3 2023, filed 1 Nov 2023.