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
+6.2%
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
$2.32B
AUM Growth
-$126M
Cap. Flow
-$315M
Cap. Flow %
-13.55%
Top 10 Hldgs %
17.34%
Holding
7,407
New
1,548
Increased
2,053
Reduced
2,239
Closed
1,460

Top Buys

Rank Stock Value
1
CELG
Celgene Corp
CELG
+$31.6M
2
C icon
Citigroup
C
+$19.5M
3
AGN
Allergan plc
AGN
+$18.4M
4
BIDU icon
Baidu
BIDU
+$18M
5
EEM icon
iShares MSCI Emerging Markets ETF
EEM
+$14.2M

Top Sells

Rank Stock Value
1
AMZN icon
Amazon
AMZN
+$81.3M
2
NVDA icon
NVIDIA
NVDA
+$60.2M
3
GOOG icon
Alphabet (Google) Class C
GOOG
+$48.2M
4
AAPL icon
Apple
AAPL
+$48.2M
5
META icon
Meta Platforms (Facebook)
META
+$31.2M

Sector Composition

Rank Sector Weight
1 Consumer Discretionary 11.27%
2 Technology 10.64%
3 Healthcare 7.06%
4 Communication Services 6.92%
5 Industrials 5.66%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
VG
5876
CALL
DELISTED
Vonage Holdings Corporation
VG
$1K ﹤0.01%
10
-226
-96% -$2.06K
AM
5877
CALL
DELISTED
ANTERO MIDSTREAM PARTNERS LP
AM
$1K ﹤0.01%
51
-64
-56% -$1.84K
ABCB icon
5878
Ameris Bancorp
ABCB
$5.89B
– –
-130
Closed -$6K
ABG icon
5879
CALL
Asbury Automotive
ABG
$4.19B
– –
-19
Closed -$2K
ABUS icon
5880
PUT
Arbutus Biopharma
ABUS
$865M
– –
-40
Closed -$6K
ACHC icon
5881
CALL
Acadia Healthcare
ACHC
$3.17B
– –
-35
Closed -$5K
ACIC icon
5882
PUT
American Coastal Insurance
ACIC
$498M
– –
-44
Closed -$3K
ADBE icon
5883
Adobe
ADBE
$89.5B
– –
-55,368
Closed -$9.53M
ADAP
5884
CALL
DELISTED
Adaptimmune Therapeutics
ADAP
– –
-10
Closed -$3K
ADAP
5885
DELISTED
Adaptimmune Therapeutics
ADAP
– –
-87
Closed –
ADEA icon
5886
CALL
Adeia
ADEA
$2.86B
– –
-45
Closed -$1K
ADTN icon
5887
CALL
Adtran
ADTN
$798M
– –
-328
Closed -$23K
AEE icon
5888
CALL
Ameren
AEE
$31.5B
– –
-9
Closed -$1K
AEM icon
5889
Agnico Eagle Mines
AEM
$72.6B
– –
-22,762
Closed -$1.02M
AFMD
5890
CALL
DELISTED
Affimed
AFMD
– –
-24
Closed -$12K
AGM.A icon
5891
CALL
Federal Agricultural Mortgage Class A
AGM.A
$1.61B
– –
-7
Closed -$3K
AGX icon
5892
CALL
Argan
AGX
$7.98B
– –
-2
Closed -$3K
AHRT
5893
CALL
AH Realty Trust
AHRT
$534M
– –
-138
Closed -$20K
AHRT
5894
AH Realty Trust
AHRT
$534M
$0 ﹤0.01%
+44
New +$653
AIV
5895
Aimco
AIV
$380M
– –
-1,802
Closed -$10.6K
AIZ icon
5896
CALL
Assurant
AIZ
$13.7B
– –
-38
Closed -$7K
AIZ icon
5897
PUT
Assurant
AIZ
$13.7B
– –
-97
Closed -$14K
AJG icon
5898
CALL
Arthur J. Gallagher & Co
AJG
$63.7B
– –
-46
Closed -$8K
AKAM icon
5899
Akamai
AKAM
$16.8B
– –
-7,706
Closed -$427K
AKBA icon
5900
CALL
Akebia Therapeutics
AKBA
$327M
– –
-21
Closed -$11K
234 235
236
237 238

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 2017 Portfolio in Review

As of Q4 2017, Simplex Trading held 7,407 positions worth $2.32B, down 5.1% from $2.45B the previous quarter. Its ten largest holdings account for 17% of the portfolio.

Simplex Trading withdrew a net $315M in Q4 2017, closing 1,460 positions and reducing 2,239 holdings. Its most notable exit was iShares 20+ Year Treasury Bond ETF, an estimated $21.1M position sold in full.

By sector, the portfolio is most concentrated in Consumer Discretionary at 11% of assets, down from 14% a quarter earlier, followed by Technology and Healthcare.

Against the trend, Simplex Trading opened a new position in Celgene Corp worth $29.2M.

  • Simplex Trading's largest Q4 2017 buy was Celgene Corp: 280,194 shares worth $29.2M.
  • Simplex Trading added most to Baidu in Q4 2017, an estimated $18M increase.
  • Simplex Trading's biggest Q4 2017 reduction was Amazon, cutting an estimated $81.3M.
  • Simplex Trading fully exited iShares 20+ Year Treasury Bond ETF in Q4 2017, selling an estimated $21.1M.
  • Simplex Trading's ten largest holdings make up 17% of its $2.32B portfolio in Q4 2017.
  • Simplex Trading opened 1,548 new positions and closed 1,460 in Q4 2017.
  • Simplex Trading's portfolio value fell 5.1% quarter-over-quarter to $2.32B.

Based on Simplex Trading's 13F filing for Q4 2017, filed 10 Jan 2018.