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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
+8.02%
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
$1.48B
AUM Growth
-$21.1M
Cap. Flow
-$87.1M
Cap. Flow %
-5.91%
Top 10 Hldgs %
17.83%
Holding
7,235
New
1,460
Increased
2,220
Reduced
1,939
Closed
1,479

Top Buys

Rank Stock Value
1
GILD icon
Gilead Sciences
GILD
+$17.3M
2
AAPL icon
Apple
AAPL
+$15.2M
3
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$14.9M
4
BKNG icon
Booking.com
BKNG
+$14.7M
5
WFC icon
Wells Fargo
WFC
+$12.9M

Top Sells

Rank Stock Value
1
GLD icon
SPDR Gold Trust
GLD
+$38.3M
2
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
+$30.7M
3
LNKD
LinkedIn Corporation
LNKD
+$15.2M
4
CELG
Celgene Corp
CELG
+$12.6M
5
TBT icon
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
+$10.4M

Sector Composition

Rank Sector Weight
1 Communication Services 8.39%
2 Healthcare 8.28%
3 Consumer Discretionary 6.84%
4 Technology 6.06%
5 Financials 4.39%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
NTRS icon
6251
Northern Trust
NTRS
$21.9B
– –
-3,766
Closed -$256K
NVCR icon
6252
NovoCure
NVCR
$2.32B
– –
-3,023
Closed -$27.6K
NVGS icon
6253
CALL
Navigator Holdings
NVGS
$1.34B
– –
-58
Closed -$1K
NWPX icon
6254
CALL
NWPX Infrastructure Inc
NWPX
$1.28B
– –
-9
Closed -$1K
NWS icon
6255
News Corp Class B
NWS
$16.1B
– –
-94
Closed -$1.28K
NWSA icon
6256
News Corp Class A
NWSA
$14.3B
– –
-6,564
Closed -$74K
NX icon
6257
CALL
Quanex
NX
$839M
– –
-22
Closed -$1K
NXRT
6258
CALL
NexPoint Residential Trust
NXRT
$661M
– –
-3
Closed -$1K
NXST icon
6259
Nexstar Media Group
NXST
$5.53B
– –
-2,808
Closed -$148K
NXST icon
6260
PUT
Nexstar Media Group
NXST
$5.53B
– –
-190
Closed -$15K
NYT icon
6261
New York Times
NYT
$11.4B
$0 ﹤0.01%
51
-178
-78% -$2.26K
OC icon
6262
PUT
Owens Corning
OC
$11.2B
– –
-162
Closed -$6K
OCUL icon
6263
Ocular Therapeutix
OCUL
$1.89B
– –
-9,574
Closed -$58.4K
ODFL icon
6264
PUT
Old Dominion Freight Line
ODFL
$48B
– –
-36
Closed -$2K
OGE icon
6265
CALL
OGE Energy
OGE
$10.2B
– –
-12
Closed -$5K
OHI icon
6266
Omega Healthcare
OHI
$15.2B
– –
-1,961
Closed -$69.7K
OI icon
6267
PUT
O-I Glass
OI
$1.37B
– –
-31
Closed -$3K
OGS icon
6268
ONE Gas
OGS
$5.02B
– –
-140
Closed -$9K
OII icon
6269
CALL
Oceaneering
OII
$4.79B
– –
-44
Closed -$1K
OIS icon
6270
CALL
Oil States International
OIS
$522M
– –
-14
Closed -$3K
OMCL icon
6271
Omnicell
OMCL
$1.81B
– –
-70
Closed -$2K
OMEX icon
6272
PUT
Odyssey Marine Exploration
OMEX
$42.8M
– –
-11
Closed -$1K
ACH
6273
CALL
Accendra Health
ACH
$240M
– –
-16
Closed -$3K
ONTO icon
6274
CALL
Onto Innovation
ONTO
$14.5B
– –
-6
Closed -$1K
ONTO icon
6275
PUT
Onto Innovation
ONTO
$14.5B
– –
-97
Closed -$1K
249 250
251
252 253

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Simplex Trading's Q3 2016 Portfolio in Review

As of Q3 2016, Simplex Trading held 7,235 positions worth $1.48B, down 1.4% from $1.5B the previous quarter. Its ten largest holdings account for 18% of the portfolio.

Simplex Trading withdrew a net $87.1M in Q3 2016, closing 1,479 positions and reducing 1,939 holdings. Its most notable exit was SPDR Gold Trust, an estimated $38.3M position sold in full.

By sector, the portfolio is most concentrated in Communication Services at 8.4% of assets, up from 6.6% a quarter earlier, followed by Healthcare and Consumer Discretionary.

Against the trend, Simplex Trading opened a new position in Booking.com worth $15.6M.

  • Simplex Trading's largest Q3 2016 buy was Booking.com: 264,225 shares worth $15.6M.
  • Simplex Trading added most to Gilead Sciences in Q3 2016, an estimated $17.3M increase.
  • Simplex Trading's biggest Q3 2016 reduction was LinkedIn Corporation, cutting an estimated $15.2M.
  • Simplex Trading fully exited SPDR Gold Trust in Q3 2016, selling an estimated $38.3M.
  • Simplex Trading's ten largest holdings make up 18% of its $1.48B portfolio in Q3 2016.
  • Simplex Trading opened 1,460 new positions and closed 1,479 in Q3 2016.
  • Simplex Trading's portfolio value fell 1.4% quarter-over-quarter to $1.48B.

Based on Simplex Trading's 13F filing for Q3 2016, filed 7 Oct 2016.