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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
+5.12%
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
$1.5B
AUM Growth
+$242M
Cap. Flow
+$178M
Cap. Flow %
11.93%
Top 10 Hldgs %
18.61%
Holding
7,153
New
1,586
Increased
2,321
Reduced
1,709
Closed
1,363

Top Buys

Rank Stock Value
1
LNKD
LinkedIn Corporation
LNKD
+$21.4M
2
GLD icon
SPDR Gold Trust
GLD
+$17.3M
3
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
+$15M
4
BIIB icon
Biogen
BIIB
+$14.9M
5
V icon
Visa
V
+$14.1M

Top Sells

Rank Stock Value
1
AVGO icon
Broadcom
AVGO
+$36.7M
2
GOOG icon
Alphabet (Google) Class C
GOOG
+$20.1M
3
EEM icon
iShares MSCI Emerging Markets ETF
EEM
+$15.8M
4
C icon
Citigroup
C
+$14.7M
5
MDY icon
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
+$13.1M

Sector Composition

Rank Sector Weight
1 Communication Services 6.61%
2 Healthcare 6.55%
3 Technology 6.45%
4 Consumer Discretionary 4.54%
5 Financials 4.51%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
SGOL icon
5426
CALL
abrdn Physical Gold Shares ETF
SGOL
$6.87B
$1K ﹤0.01%
+210
New +$2.58K
SGRY icon
5427
Surgery Partners
SGRY
$2.03B
$1K ﹤0.01%
+100
New +$1.49K
SGRY icon
5428
PUT
Surgery Partners
SGRY
$2.03B
$1K ﹤0.01%
+8
New +$119
SHW icon
5429
Sherwin-Williams
SHW
$87.8B
$1K ﹤0.01%
15
-9,273
-100% -$903K
SJM icon
5430
PUT
J.M. Smucker
SJM
$13.1B
$1K ﹤0.01%
+22
New +$2.93K
HTO
5431
CALL
H2O America
HTO
$2.71B
$1K ﹤0.01%
+4
New +$143
SKYW icon
5432
PUT
Skywest
SKYW
$4.5B
$1K ﹤0.01%
14
-56
-80% -$1.28K
SLF icon
5433
PUT
Sun Life Financial
SLF
$46.7B
$1K ﹤0.01%
+9
New +$302
SLGN icon
5434
PUT
Silgan Holdings
SLGN
$5.08B
$1K ﹤0.01%
36
-230
-86% -$5.91K
SNDA icon
5435
PUT
Sonida Senior Living
SNDA
$2.02B
– –
-4
Closed -$1.13K
SNX icon
5436
PUT
TD Synnex
SNX
$19.7B
$1K ﹤0.01%
30
-560
-95% -$24.6K
SON icon
5437
PUT
Sonoco
SON
$5.99B
$1K ﹤0.01%
60
-50
-45% -$2.37K
SPWH icon
5438
Sportsman's Warehouse
SPWH
$45.7M
$1K ﹤0.01%
196
-1,989
-91% -$19.8K
SR icon
5439
CALL
Spire
SR
$4.93B
$1K ﹤0.01%
+2
New +$131
STE icon
5440
CALL
Steris
STE
$22.4B
$1K ﹤0.01%
10
– –
STM icon
5441
PUT
STMicroelectronics
STM
$45B
$1K ﹤0.01%
+9
New +$52
STRA icon
5442
PUT
Strategic Education
STRA
$1.83B
$1K ﹤0.01%
29
+1
+4% +$47
STWD icon
5443
PUT
Starwood Property Trust
STWD
$6.21B
$1K ﹤0.01%
+85
New +$1.69K
SUN icon
5444
CALL
Sunoco
SUN
$14.4B
$1K ﹤0.01%
22
-308
-93% -$10.1K
SXC icon
5445
CALL
SunCoke Energy
SXC
$777M
$1K ﹤0.01%
+57
New +$360
SYY icon
5446
PUT
Sysco
SYY
$40.7B
$1K ﹤0.01%
22
-5
-19% -$242
THO icon
5447
PUT
Thor Industries
THO
$4.15B
$1K ﹤0.01%
8
-26
-76% -$1.66K
THRM icon
5448
CALL
Gentherm
THRM
$1.28B
$1K ﹤0.01%
+15
New +$570
TREX icon
5449
CALL
Trex
TREX
$4.55B
$1K ﹤0.01%
44
-4
-8% -$45
TROX icon
5450
CALL
Tronox
TROX
$979M
$1K ﹤0.01%
74
+9
+14% +$51
216 217
218
219 220

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Simplex Trading's Q2 2016 Portfolio in Review

As of Q2 2016, Simplex Trading held 7,153 positions worth $1.5B, up 19% from $1.25B the previous quarter. Its ten largest holdings account for 19% of the portfolio.

Simplex Trading deployed $178M of net new capital in Q2 2016, opening 1,586 new positions and adding to 2,321 existing holdings. Its largest new stake was Biogen: 56,467 shares worth $13.7M.

By sector, the portfolio is most concentrated in Communication Services at 6.6% of assets, down from 6.9% a quarter earlier, followed by Healthcare and Technology.

On the sell side, the largest reduction was Broadcom, an estimated $36.7M trimmed.

  • Simplex Trading's largest Q2 2016 buy was Biogen: 56,467 shares worth $13.7M.
  • Simplex Trading added most to LinkedIn Corporation in Q2 2016, an estimated $21.4M increase.
  • Simplex Trading's biggest Q2 2016 reduction was Broadcom, cutting an estimated $36.7M.
  • Simplex Trading fully exited Alphabet (Google) Class C in Q2 2016, selling an estimated $20.1M.
  • Simplex Trading's ten largest holdings make up 19% of its $1.5B portfolio in Q2 2016.
  • Simplex Trading opened 1,586 new positions and closed 1,363 in Q2 2016.
  • Simplex Trading's portfolio value rose 19% quarter-over-quarter to $1.5B.

Based on Simplex Trading's 13F filing for Q2 2016, filed 18 Jul 2016.