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
+26.79%
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
$77.2B
AUM Growth
+$3.66B
Cap. Flow
-$1.09B
Cap. Flow %
-1.41%
Top 10 Hldgs %
42.09%
Holding
9,568
New
1,711
Increased
3,402
Reduced
3,106
Closed
1,157

Top Buys

Rank Stock Value
1
BABA icon
Alibaba
BABA
+$39.9M
2
QQQ icon
Invesco QQQ Trust
QQQ
+$39M
3
MA icon
Mastercard
MA
+$31.3M
4
AAPL icon
Apple
AAPL
+$25.3M
5
GOOG icon
Alphabet (Google) Class C
GOOG
+$25.1M

Top Sells

Rank Stock Value
1
JPM icon
JPMorgan Chase
JPM
+$52.8M
2
TSM icon
TSMC
TSM
+$43M
3
AMZN icon
Amazon
AMZN
+$24.7M
4
SLV icon
iShares Silver Trust
SLV
+$24.2M
5
NFLX icon
Netflix
NFLX
+$21.1M

Sector Composition

Rank Sector Weight
1 Consumer Discretionary 0.65%
2 Technology 0.37%
3 Healthcare 0.33%
4 Industrials 0.21%
5 Communication Services 0.19%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
RFL icon
7801
Rafael Holdings
RFL
$111M
$4K ﹤0.01%
+203
New +$4K
SCOR icon
7802
PUT
Comscore
SCOR
$4K ﹤0.01%
1
– –
SNDR icon
7803
Schneider National
SNDR
$6.59B
$4K ﹤0.01%
205
-86
-30% -$1.92K
SNDR icon
7804
PUT
Schneider National
SNDR
$6.59B
$4K ﹤0.01%
2
– –
SRRK icon
7805
CALL
Scholar Rock
SRRK
$5.71B
$4K ﹤0.01%
+1
New +$36
STGW icon
7806
PUT
Stagwell
STGW
$1.84B
$4K ﹤0.01%
+18
New +$40
SVXY icon
7807
ProShares Short VIX Short-Term Futures ETF
SVXY
$220M
$4K ﹤0.01%
200
– –
TALO icon
7808
Talos Energy
TALO
$2.49B
$4K ﹤0.01%
487
-33,446
-99% -$260K
TTI icon
7809
CALL
TETRA Technologies
TTI
$1.23B
$4K ﹤0.01%
50
-12
-19% -$8
UAL icon
7810
United Airlines
UAL
$38.4B
$4K ﹤0.01%
100
– –
UAN icon
7811
CVR Partners
UAN
$1.3B
$4K ﹤0.01%
291
+236
+429% +$2.29K
UVSP icon
7812
PUT
Univest Financial
UVSP
$1.23B
$4K ﹤0.01%
2
-1
-33% -$18
VCYT icon
7813
Veracyte
VCYT
$4.52B
$4K ﹤0.01%
+97
New +$4.5K
VOC icon
7814
VOC Energy
VOC
$57.5M
$4K ﹤0.01%
+2,035
New +$4.04K
VVX icon
7815
CALL
V2X
VVX
$2.62B
$4K ﹤0.01%
+1
New +$45
WTI icon
7816
PUT
W&T Offshore
WTI
$545M
$4K ﹤0.01%
19
-196
-91% -$378
XIN
7817
PUT
DELISTED
Xinyuan Real Estate
XIN
$4K ﹤0.01%
2
– –
XSD icon
7818
State Street SPDR S&P Semiconductor ETF
XSD
$2.78B
$4K ﹤0.01%
24
-266
-92% -$39.5K
YMAB
7819
DELISTED
Y-mAbs Therapeutics
YMAB
$4K ﹤0.01%
+100
New +$4.63K
MTUS icon
7820
CALL
Metallus
MTUS
$873M
$4K ﹤0.01%
9
-12
-57% -$54
TXNM
7821
PUT
TXNM Energy Inc
TXNM
$6.47B
$4K ﹤0.01%
+1
New +$48
VIVS
7822
CALL
VivoSim Labs
VIVS
$1.46M
– –
-6
Closed -$683
PSTX
7823
PUT
DELISTED
Poseida Therapeutics, Inc. Common Stock
PSTX
$4K ﹤0.01%
+4
New +$42
AUMN
7824
PUT
DELISTED
Golden Minerals Company
AUMN
$4K ﹤0.01%
2
– –
SAVE
7825
DELISTED
Spirit Airlines, Inc.
SAVE
$4K ﹤0.01%
200
-59,696
-100% -$1.24M
311 312
313
314 315

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 Q4 2020 Portfolio in Review

As of Q4 2020, Simplex Trading held 9,568 positions worth $77.2B, up 5% from $73.5B the previous quarter. Its ten largest holdings account for 42% of the portfolio.

Simplex Trading's Q4 2020 filing shows 1,711 new, 3,402 increased, 3,106 reduced and 1,157 closed positions. Its largest new stake was Alibaba: 143,630 shares worth $33.4M. The largest sale was JPMorgan Chase, an estimated $52.8M.

By sector, the portfolio is most concentrated in Consumer Discretionary at 0.65% of assets, up from 0.53% a quarter earlier, followed by Technology and Healthcare.

  • Simplex Trading's largest Q4 2020 buy was Alibaba: 143,630 shares worth $33.4M.
  • Simplex Trading added most to Invesco QQQ Trust in Q4 2020, an estimated $39M increase.
  • Simplex Trading's biggest Q4 2020 reduction was JPMorgan Chase, cutting an estimated $52.8M.
  • Simplex Trading fully exited Target in Q4 2020, selling an estimated $14.3M.
  • Simplex Trading's ten largest holdings make up 42% of its $77.2B portfolio in Q4 2020.
  • Simplex Trading opened 1,711 new positions and closed 1,157 in Q4 2020.
  • Simplex Trading's portfolio value rose 5% quarter-over-quarter to $77.2B.

Based on Simplex Trading's 13F filing for Q4 2020, filed 2 Feb 2021.