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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
-0.41%
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
$1.25B
AUM Growth
-$22.5M
Cap. Flow
-$16M
Cap. Flow %
-1.28%
Top 10 Hldgs %
17.26%
Holding
7,084
New
1,678
Increased
2,214
Reduced
1,528
Closed
1,505

Top Buys

Rank Stock Value
1
AVGO icon
Broadcom
AVGO
+$33.7M
2
GLD icon
SPDR Gold Trust
GLD
+$17.8M
3
EEM icon
iShares MSCI Emerging Markets ETF
EEM
+$14.3M
4
MDY icon
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
+$11.9M
5
C icon
Citigroup
C
+$8.7M

Top Sells

Rank Stock Value
1
AAPL icon
Apple
AAPL
+$34.2M
2
GMCR
KEURIG GREEN MTN INC
GMCR
+$17.9M
3
CMG icon
Chipotle Mexican Grill
CMG
+$14.7M
4
DIS icon
Walt Disney
DIS
+$13.3M
5
BKNG icon
Booking.com
BKNG
+$12.1M

Sector Composition

Rank Sector Weight
1 Technology 7.64%
2 Communication Services 6.85%
3 Consumer Discretionary 4.92%
4 Healthcare 4.57%
5 Financials 4.22%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
G icon
4451
CALL
Genpact
G
$5.87B
$3K ﹤0.01%
37
-158
-81% -$4K
GEN icon
4452
PUT
Gen Digital
GEN
$16.6B
$3K ﹤0.01%
254
+34
+15% +$654
GEOS icon
4453
PUT
Geospace Technologies
GEOS
$88.4M
$3K ﹤0.01%
2
– –
GFF icon
4454
CALL
Griffon
GFF
$4.29B
$3K ﹤0.01%
96
+36
+60% +$544
GGAL icon
4455
CALL
Galicia Financial Group
GGAL
$7.9B
$3K ﹤0.01%
56
-61
-52% -$1.69K
GIII icon
4456
CALL
G-III Apparel Group
GIII
$1.55B
$3K ﹤0.01%
+48
New +$2.32K
GRPN icon
4457
PUT
Groupon
GRPN
$1.07B
$3K ﹤0.01%
11
+6
+120% +$415
GT icon
4458
PUT
Goodyear
GT
$2.12B
$3K ﹤0.01%
125
+9
+8% +$271
GTLS
4459
PUT
DELISTED
Chart Industries
GTLS
$3K ﹤0.01%
69
+45
+188% +$804
HCI icon
4460
CALL
HCI Group
HCI
$2.29B
$3K ﹤0.01%
+59
New +$1.92K
HCI icon
4461
PUT
HCI Group
HCI
$2.29B
$3K ﹤0.01%
+149
New +$4.85K
HLX icon
4462
PUT
Helix Energy Solutions
HLX
$1.35B
$3K ﹤0.01%
+50
New +$211
HOUS
4463
PUT
DELISTED
Anywhere Real Estate
HOUS
$3K ﹤0.01%
45
+29
+181% +$949
HTH icon
4464
CALL
Hilltop Holdings
HTH
$2.28B
$3K ﹤0.01%
+37
New +$625
HUBS icon
4465
CALL
HubSpot
HUBS
$12.2B
$3K ﹤0.01%
74
+63
+573% +$2.71K
IAG icon
4466
PUT
IAMGOLD
IAG
$8.24B
$3K ﹤0.01%
52
+5
+11% +$10
ICUI icon
4467
PUT
ICU Medical
ICUI
$4.14B
$3K ﹤0.01%
+13
New +$1.24K
IEP icon
4468
CALL
Icahn Enterprises
IEP
$5.26B
$3K ﹤0.01%
+112
New +$6.45K
IIIN icon
4469
CALL
Insteel Industries
IIIN
$631M
$3K ﹤0.01%
+13
New +$325
INSG icon
4470
Inseego
INSG
$111M
$3K ﹤0.01%
197
-115
-37% -$1.6K
IPI icon
4471
Intrepid Potash
IPI
$474M
$3K ﹤0.01%
345
+249
+259% +$4.5K
IT icon
4472
CALL
Gartner
IT
$10.4B
$3K ﹤0.01%
+4
New +$338
JKHY icon
4473
PUT
Jack Henry & Associates
JKHY
$11.2B
$3K ﹤0.01%
+25
New +$2.01K
KEX icon
4474
CALL
Kirby Corp
KEX
$7.77B
$3K ﹤0.01%
25
-5
-17% -$273
KEX icon
4475
PUT
Kirby Corp
KEX
$7.77B
$3K ﹤0.01%
29
-8
-22% -$436
177 178
179
180 181

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Simplex Trading's Q1 2016 Portfolio in Review

As of Q1 2016, Simplex Trading held 7,084 positions worth $1.25B, down 1.8% from $1.28B the previous quarter. Its ten largest holdings account for 17% of the portfolio.

Simplex Trading's Q1 2016 filing shows 1,678 new, 2,214 increased, 1,528 reduced and 1,505 closed positions. Its largest new stake was Broadcom: 2,493,400 shares worth $38.5M. The largest sale was Apple, an estimated $34.2M.

By sector, the portfolio is most concentrated in Technology at 7.6% of assets, up from 7% a quarter earlier, followed by Communication Services and Consumer Discretionary.

  • Simplex Trading's largest Q1 2016 buy was Broadcom: 2,493,400 shares worth $38.5M.
  • Simplex Trading added most to Citigroup in Q1 2016, an estimated $8.7M increase.
  • Simplex Trading's biggest Q1 2016 reduction was Booking.com, cutting an estimated $12.1M.
  • Simplex Trading fully exited Apple in Q1 2016, selling an estimated $34.2M.
  • Simplex Trading's ten largest holdings make up 17% of its $1.25B portfolio in Q1 2016.
  • Simplex Trading opened 1,678 new positions and closed 1,505 in Q1 2016.
  • Simplex Trading's portfolio value fell 1.8% quarter-over-quarter to $1.25B.

Based on Simplex Trading's 13F filing for Q1 2016, filed 14 Apr 2016.