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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
MEOH icon
551
Methanex
MEOH
$4.37B
$458K 0.03%
12,858
+11,520
+861% +$340K
MBLY
552
CALL
DELISTED
Mobileye N.V.
MBLY
$458K 0.03%
2,609
+1,637
+168% +$75.7K
SAFT icon
553
Safety Insurance
SAFT
$1.06B
$457K 0.03%
+6,809
New +$444K
AXP icon
554
CALL
American Express
AXP
$238B
$456K 0.03%
1,462
-244
-14% -$15.7K
RSPP
555
DELISTED
RSP Permian, Inc.
RSPP
$456K 0.03%
11,768
+10,386
+752% +$384K
Z icon
556
CALL
Zillow
Z
$7.18B
$455K 0.03%
979
+11
+1% +$394
SLG icon
557
SL Green Realty
SLG
$3.56B
$454K 0.03%
+4,342
New +$477K
TYNS
558
PUT
DELISTED
Direxion Daily 7-10 Year Treasury Bear 1X Shares
TYNS
$454K 0.03%
1,898
-506
-21% -$13.9K
UA icon
559
PUT
Under Armour Class C
UA
$3.02B
$452K 0.03%
2,225
+25
+1% +$903
KBE icon
560
State Street SPDR S&P Bank ETF
KBE
$1.64B
$450K 0.03%
+13,484
New +$438K
POT
561
PUT
DELISTED
Potash Corp Of Saskatchewan
POT
$449K 0.03%
1,486
-1,011
-40% -$16.7K
PTR
562
DELISTED
PETROCHINA COMPANY LIMITED ADS (REP 100 H SHARES)
PTR
$447K 0.03%
6,695
+5,226
+356% +$352K
TWX
563
CALL
DELISTED
Time Warner Inc
TWX
$447K 0.03%
1,348
+112
+9% +$8.75K
LNT icon
564
Alliant Energy
LNT
$19.1B
$446K 0.03%
11,643
+6,827
+142% +$268K
NVAX icon
565
Novavax
NVAX
$1.3B
$446K 0.03%
+10,733
New +$1.39M
WPX
566
DELISTED
WPX Energy, Inc.
WPX
$446K 0.03%
33,822
-3,371
-9% -$37.4K
DD icon
567
CALL
DuPont de Nemours
DD
$18.9B
$445K 0.03%
1,128
-132
-10% -$17.6K
CATM
568
DELISTED
Cardtronics plc Class A Ordinary Shares (UK)
CATM
$445K 0.03%
+9,989
New +$440K
NVDA icon
569
PUT
NVIDIA
NVDA
$5.14T
$444K 0.03%
157,520
+62,040
+65% +$91.6K
TXN icon
570
CALL
Texas Instruments
TXN
$268B
$441K 0.03%
1,392
+134
+11% +$9.13K
UNG icon
571
United States Natural Gas Fund
UNG
$472M
$441K 0.03%
+3,300
New +$436K
MDT icon
572
CALL
Medtronic
MDT
$105B
$440K 0.03%
1,935
+359
+23% +$31.3K
VIAB
573
PUT
DELISTED
Viacom Inc. Class B
VIAB
$440K 0.03%
1,961
+678
+53% +$28.1K
CIE
574
PUT
DELISTED
Cobalt International Energy, Inc
CIE
$440K 0.03%
42
-11
-21% -$204
COTY icon
575
PUT
Coty
COTY
$2.4B
$439K 0.03%
2,045
+1,723
+535% +$45.5K
21 22
23
24 25

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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.