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
+2.14%
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
$860M
AUM Growth
+$34.4M
Cap. Flow
-$17.8M
Cap. Flow %
-2.07%
Top 10 Hldgs %
14.96%
Holding
6,670
New
1,973
Increased
1,386
Reduced
1,513
Closed
1,643

Top Buys

Rank Stock Value
1
GOOG icon
Alphabet (Google) Class C
GOOG
+$40.1M
2
BRK.B icon
Berkshire Hathaway Class B
BRK.B
+$12.5M
3
BABA icon
Alibaba
BABA
+$10.5M
4
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$9.89M
5
INTC icon
Intel
INTC
+$9.83M

Top Sells

Rank Stock Value
1
AAPL icon
Apple
AAPL
+$35.7M
2
GILD icon
Gilead Sciences
GILD
+$32.3M
3
AMZN icon
Amazon
AMZN
+$29M
4
BKNG icon
Booking.com
BKNG
+$28.4M
5
BIDU icon
Baidu
BIDU
+$13.3M

Sector Composition

Rank Sector Weight
1 Communication Services 7.76%
2 Consumer Discretionary 7.62%
3 Healthcare 7.24%
4 Technology 6.95%
5 Financials 4.83%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
IRDM icon
5226
Iridium Communications
IRDM
$4.85B
$0 ﹤0.01%
+53
New +$494
IRM icon
5227
CALL
Iron Mountain
IRM
$38.2B
– –
-135
Closed -$4K
ISRG icon
5228
Intuitive Surgical
ISRG
$121B
– –
-18,387
Closed -$1.04M
ITGR icon
5229
PUT
Integer Holdings
ITGR
$3.35B
– –
-11
Closed -$1K
ITRI icon
5230
Itron
ITRI
$3.73B
– –
-750
Closed -$27.9K
IVZ icon
5231
Invesco
IVZ
$13.3B
– –
-8,990
Closed -$351K
IWS icon
5232
iShares Russell Mid-Cap Value ETF
IWS
$15.7B
– –
-4,291
Closed -$317K
J icon
5233
CALL
Jacobs Solutions
J
$15.9B
– –
-19
Closed -$2K
J icon
5234
PUT
Jacobs Solutions
J
$15.9B
– –
-8
Closed -$6K
JACK icon
5235
PUT
Jack in the Box
JACK
$278M
– –
-6
Closed -$2K
JAKK icon
5236
PUT
Jakks Pacific
JAKK
$280M
– –
-1
Closed -$1K
JBL icon
5237
CALL
Jabil
JBL
$32.8B
– –
-51
Closed -$15K
JDST icon
5238
Direxion Daily Junior Gold Miners Index Bear 2X ETF
JDST
$30.4M
– –
0
– –
JEF icon
5239
CALL
Jefferies Financial Group
JEF
$12.9B
– –
-16
Closed -$2K
JKHY icon
5240
CALL
Jack Henry & Associates
JKHY
$10.7B
– –
-10
Closed -$4K
JLL icon
5241
PUT
Jones Lang LaSalle
JLL
$15.1B
– –
-4
Closed -$2K
JNPR
5242
PUT
DELISTED
Juniper Networks
JNPR
– –
-24
Closed -$4K
JNK icon
5243
State Street SPDR Bloomberg High Yield Bond ETF
JNK
$7.24B
– –
-5,975
Closed -$692K
JOE icon
5244
CALL
St. Joe Company
JOE
$3.57B
– –
-89
Closed -$7K
JRVR icon
5245
James River Group Holdings
JRVR
$218M
– –
-238
Closed -$7K
KAI icon
5246
CALL
Kadant
KAI
$3.69B
– –
-3
Closed -$1K
OPLN
5247
Openlane
OPLN
$4.17B
– –
-3,802
Closed -$51.5K
KBR icon
5248
KBR
KBR
$4.68B
– –
-429
Closed -$6.97K
KCE icon
5249
State Street SPDR S&P Capital Markets ETF
KCE
$453M
– –
-163
Closed -$8K
KDP icon
5250
Keurig Dr Pepper
KDP
$40.4B
$0 ﹤0.01%
+3
New +$232
208 209
210
211 212

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 Q1 2015 Portfolio in Review

As of Q1 2015, Simplex Trading held 6,670 positions worth $860M, up 4.2% from $826M the previous quarter. Its ten largest holdings account for 15% of the portfolio.

Simplex Trading's Q1 2015 filing shows 1,973 new, 1,386 increased, 1,513 reduced and 1,643 closed positions. Its largest new stake was Alphabet (Google) Class C: 1,497,580 shares worth $41.4M. The largest sale was Apple, an estimated $35.7M.

By sector, the portfolio is most concentrated in Communication Services at 7.8% of assets, up from 4.8% a quarter earlier, followed by Consumer Discretionary and Healthcare.

  • Simplex Trading's largest Q1 2015 buy was Alphabet (Google) Class C: 1,497,580 shares worth $41.4M.
  • Simplex Trading added most to Alibaba in Q1 2015, an estimated $10.5M increase.
  • Simplex Trading's biggest Q1 2015 reduction was Apple, cutting an estimated $35.7M.
  • Simplex Trading fully exited Amazon in Q1 2015, selling an estimated $29M.
  • Simplex Trading's ten largest holdings make up 15% of its $860M portfolio in Q1 2015.
  • Simplex Trading opened 1,973 new positions and closed 1,643 in Q1 2015.
  • Simplex Trading's portfolio value rose 4.2% quarter-over-quarter to $860M.

Based on Simplex Trading's 13F filing for Q1 2015, filed 21 Apr 2015.