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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
LIVN icon
5326
CALL
LivaNova
LIVN
$4.51B
$1K ﹤0.01%
10
-1
-9% -$51
LKQ icon
5327
PUT
LKQ Corp
LKQ
$6.77B
$1K ﹤0.01%
6
-8
-57% -$260
LNN icon
5328
CALL
Lindsay Corp
LNN
$1.17B
$1K ﹤0.01%
+4
New +$285
LPCN icon
5329
CALL
Lipocine
LPCN
$17.6M
$1K ﹤0.01%
+22
New +$3.41K
LPX icon
5330
CALL
Louisiana-Pacific
LPX
$5.35B
$1K ﹤0.01%
12
-233
-95% -$4.1K
LQDT icon
5331
CALL
Liquidity Services
LQDT
$1.23B
$1K ﹤0.01%
+11
New +$69
LRMR icon
5332
CALL
Larimar Therapeutics
LRMR
$398M
$1K ﹤0.01%
5
-4
-44% -$316
LRMR icon
5333
PUT
Larimar Therapeutics
LRMR
$398M
$1K ﹤0.01%
1
-5
-83% -$395
MAG
5334
CALL
DELISTED
MAG Silver
MAG
$1K ﹤0.01%
4
-6
-60% -$73
MAS icon
5335
PUT
Masco
MAS
$16.5B
$1K ﹤0.01%
+48
New +$1.51K
MASI
5336
PUT
DELISTED
Masimo
MASI
$1K ﹤0.01%
+2
New +$94
MCHP icon
5337
PUT
Microchip Technology
MCHP
$41.1B
$1K ﹤0.01%
528
+390
+283% +$9.71K
MEOH icon
5338
CALL
Methanex
MEOH
$4.12B
$1K ﹤0.01%
74
+52
+236% +$1.66K
MERC icon
5339
CALL
Mercer International
MERC
$45.6M
$1K ﹤0.01%
+20
New +$177
MFIN icon
5340
PUT
Medallion Financial
MFIN
$229M
$1K ﹤0.01%
+24
New +$187
MGPI icon
5341
PUT
MGP Ingredients
MGPI
$400M
$1K ﹤0.01%
+27
New +$802
MKL icon
5342
CALL
Markel Group
MKL
$25.5B
$1K ﹤0.01%
1
-2
-67% -$1.86K
MOV icon
5343
PUT
Movado Group
MOV
$846M
$1K ﹤0.01%
9
-5
-36% -$123
MPAA icon
5344
Motorcar Parts of America
MPAA
$267M
$1K ﹤0.01%
+40
New +$1.26K
MRC
5345
CALL
DELISTED
MRC Global
MRC
$1K ﹤0.01%
+45
New +$624
MRC
5346
PUT
DELISTED
MRC Global
MRC
$1K ﹤0.01%
141
-21
-13% -$291
MRIN
5347
PUT
DELISTED
Marin Software
MRIN
– –
0
– –
MSA icon
5348
CALL
Mine Safety
MSA
$6.94B
$1K ﹤0.01%
+5
New +$248
MTN icon
5349
PUT
Vail Resorts
MTN
$5.6B
$1K ﹤0.01%
20
-12
-38% -$1.58K
MTX icon
5350
CALL
Minerals Technologies
MTX
$2.33B
$1K ﹤0.01%
18
+16
+800% +$928
212 213
214
215 216

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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.