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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
ROCK icon
5026
PUT
Gibraltar Industries
ROCK
$1.4B
$2K ﹤0.01%
+52
New +$1.9K
SAP icon
5027
PUT
SAP
SAP
$210B
$2K ﹤0.01%
23
-24
-51% -$2.06K
ECHO
5028
CALL
EchoStar
ECHO
$24.7B
$2K ﹤0.01%
6
– –
FLNA
5029
Filana Therapeutics
FLNA
$43.9M
$2K ﹤0.01%
+407
New +$6.74K
SBH icon
5030
Sally Beauty Holdings
SBH
$1.47B
$2K ﹤0.01%
108
-6
-5% -$168
SBRA icon
5031
CALL
Sabra Healthcare REIT
SBRA
$5.62B
$2K ﹤0.01%
32
-74
-70% -$1.77K
SEE
5032
CALL
DELISTED
Sealed Air
SEE
$2K ﹤0.01%
20
-8
-29% -$376
SEIC icon
5033
PUT
SEI Investments
SEIC
$12.4B
$2K ﹤0.01%
+13
New +$610
SEM
5034
CALL
DELISTED
Select Medical
SEM
$2K ﹤0.01%
19
-20
-51% -$127
SGRY icon
5035
Surgery Partners
SGRY
$2.04B
$2K ﹤0.01%
101
+1
+1% +$18
SLF icon
5036
PUT
Sun Life Financial
SLF
$46.7B
$2K ﹤0.01%
10
+1
+11% +$32
SLG icon
5037
CALL
SL Green Realty
SLG
$3.73B
$2K ﹤0.01%
25
-62
-71% -$6.8K
SNBR
5038
PUT
DELISTED
Sleep Number
SNBR
$2K ﹤0.01%
4
-126
-97% -$3.1K
SON icon
5039
CALL
Sonoco
SON
$5.94B
$2K ﹤0.01%
10
-26
-72% -$1.34K
SPNT icon
5040
CALL
SiriusPoint
SPNT
$3.11B
$2K ﹤0.01%
+100
New +$1.24K
SRE icon
5041
PUT
Sempra
SRE
$59.7B
$2K ﹤0.01%
68
-220
-76% -$12K
SSL icon
5042
CALL
Sasol
SSL
$7.03B
$2K ﹤0.01%
31
-92
-75% -$2.48K
STKL
5043
PUT
DELISTED
SunOpta
STKL
$2K ﹤0.01%
+52
New +$315
SVRA icon
5044
Savara
SVRA
$1.08B
$2K ﹤0.01%
+361
New +$10.3K
TACT icon
5045
Transact Technologies
TACT
$50.1M
$2K ﹤0.01%
+370
New +$2.82K
TDC icon
5046
PUT
Teradata
TDC
$2.81B
$2K ﹤0.01%
96
+66
+220% +$1.97K
TEO icon
5047
PUT
Telecom Argentina
TEO
$5.93B
$2K ﹤0.01%
+78
New +$1.44K
THRM icon
5048
CALL
Gentherm
THRM
$1.28B
$2K ﹤0.01%
65
+50
+333% +$1.65K
TITN icon
5049
PUT
Titan Machinery
TITN
$469M
$2K ﹤0.01%
40
-2
-5% -$22
TNET icon
5050
CALL
TriNet
TNET
$3.11B
$2K ﹤0.01%
41
-46
-53% -$979
200 201
202
203 204

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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.