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
+1.87%
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
$1.67B
AUM Growth
+$199M
Cap. Flow
+$181M
Cap. Flow %
10.79%
Top 10 Hldgs %
20.01%
Holding
7,301
New
1,543
Increased
2,137
Reduced
2,023
Closed
1,480

Top Buys

Rank Stock Value
1
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$49.8M
2
AAPL icon
Apple
AAPL
+$24.5M
3
C icon
Citigroup
C
+$23.5M
4
AMZN icon
Amazon
AMZN
+$22.7M
5
GOOG icon
Alphabet (Google) Class C
GOOG
+$18.5M

Top Sells

Rank Stock Value
1
LNKD
LinkedIn Corporation
LNKD
+$17.4M
2
WFC icon
Wells Fargo
WFC
+$13.5M
3
MDVN
MEDIVATION, INC.
MDVN
+$8.62M
4
GS icon
Goldman Sachs
GS
+$8.5M
5
HYG icon
iShares iBoxx $ High Yield Corporate Bond ETF
HYG
+$8.15M

Sector Composition

Rank Sector Weight
1 Communication Services 8.76%
2 Technology 7.19%
3 Healthcare 6.91%
4 Consumer Discretionary 6.53%
5 Financials 5.37%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
IAU icon
6126
iShares Gold Trust
IAU
$63.2B
– –
-5,548
Closed -$130K
IBCP icon
6127
Independent Bank Corp
IBCP
$779M
$0 ﹤0.01%
+16
New +$295
IBOC icon
6128
International Bancshares
IBOC
$4.79B
– –
-317
Closed -$9K
IBP icon
6129
Installed Building Products
IBP
$6.12B
$0 ﹤0.01%
2
-1,995
-100% -$76K
ICMB icon
6130
Investcorp Credit Management BDC
ICMB
$11.3M
– –
-52
Closed –
IDT icon
6131
CALL
IDT Corp
IDT
$1.6B
– –
-78
Closed -$13K
IEO icon
6132
iShares US Oil & Gas Exploration & Production ETF
IEO
$574M
– –
-118
Closed -$7K
IEMG icon
6133
CALL
iShares Core MSCI Emerging Markets ETF
IEMG
$150B
– –
-40
Closed -$6K
IEX icon
6134
IDEX
IEX
$16.5B
– –
-184
Closed -$16.6K
IFF icon
6135
CALL
International Flavors & Fragrances
IFF
$19.4B
– –
-21
Closed -$24K
IIIN icon
6136
CALL
Insteel Industries
IIIN
$633M
– –
-9
Closed -$2K
IJS icon
6137
iShares S&P Small-Cap 600 Value ETF
IJS
$8.15B
– –
-2,160
Closed -$134K
IMNN icon
6138
Imunon
IMNN
$6.6M
– –
-1
Closed -$2.28K
IMOS
6139
CALL
ChipMOS TECHNOLOGIES
IMOS
$1.95B
– –
-333
Closed -$17K
IMOS
6140
PUT
ChipMOS TECHNOLOGIES
IMOS
$1.95B
– –
-127
Closed -$12K
INDB icon
6141
Independent Bank
INDB
$4.08B
– –
-130
Closed -$7K
INFY icon
6142
Infosys
INFY
$44.5B
– –
-104,230
Closed -$782K
ING icon
6143
PUT
ING
ING
$94.1B
– –
-132
Closed -$3K
INGR icon
6144
CALL
Ingredion
INGR
$6.37B
– –
-31
Closed -$4K
INGR icon
6145
PUT
Ingredion
INGR
$6.37B
– –
-9
Closed -$1K
INOD icon
6146
Innodata
INOD
$1.86B
$0 ﹤0.01%
+390
New +$882
INSG icon
6147
CALL
Inseego
INSG
$110M
– –
-6
Closed -$1K
INVA icon
6148
Innoviva
INVA
$1.58B
– –
-403
Closed -$4.23K
INVA icon
6149
PUT
Innoviva
INVA
$1.58B
– –
-160
Closed -$9K
IONS icon
6150
Ionis Pharmaceuticals
IONS
$9.47B
– –
-47,310
Closed -$1.87M
244 245
246
247 248

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 2016 Portfolio in Review

As of Q4 2016, Simplex Trading held 7,301 positions worth $1.67B, up 13% from $1.48B the previous quarter. Its ten largest holdings account for 20% of the portfolio.

Simplex Trading deployed $181M of net new capital in Q4 2016, opening 1,543 new positions and adding to 2,137 existing holdings. Its largest new stake was State Street SPDR S&P 500 ETF Trust: 227,870 shares worth $50.9M.

By sector, the portfolio is most concentrated in Communication Services at 8.8% of assets, up from 8.4% a quarter earlier, followed by Technology and Healthcare.

On the sell side, the largest reduction was Goldman Sachs, an estimated $8.5M trimmed.

  • Simplex Trading's largest Q4 2016 buy was State Street SPDR S&P 500 ETF Trust: 227,870 shares worth $50.9M.
  • Simplex Trading added most to Apple in Q4 2016, an estimated $24.5M increase.
  • Simplex Trading's biggest Q4 2016 reduction was Goldman Sachs, cutting an estimated $8.5M.
  • Simplex Trading fully exited LinkedIn Corporation in Q4 2016, selling an estimated $17.4M.
  • Simplex Trading's ten largest holdings make up 20% of its $1.67B portfolio in Q4 2016.
  • Simplex Trading opened 1,543 new positions and closed 1,480 in Q4 2016.
  • Simplex Trading's portfolio value rose 13% quarter-over-quarter to $1.67B.

Based on Simplex Trading's 13F filing for Q4 2016, filed 11 Jan 2017.