Simplex Trading Portfolio holdings
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.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$83.1M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$37.2M |
| 3 |
Amgen
AMGN
|
+$30.5M |
| 4 |
Micron Technology
MU
|
+$28.8M |
| 5 |
Qualcomm
QCOM
|
+$18.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$29.5M |
| 2 |
Goldman Sachs
GS
|
+$27.8M |
| 3 |
Gilead Sciences
GILD
|
+$27.6M |
| 4 |
Booking.com
BKNG
|
+$25.4M |
| 5 |
AT&T
T
|
+$19.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 13.55% |
| 2 | Communication Services | 11.57% |
| 3 | Consumer Discretionary | 9.69% |
| 4 | Healthcare | 7.28% |
| 5 | Financials | 4.17% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1701
CALL
Cheniere Energy
LNG
$56.5B
| $107K | ﹤0.01% |
671
-319
| -32% | -$15.2K |
|
1702
MakeMyTrip
MMYT
$4.67B
| $107K | ﹤0.01% |
+3,212
| New | +$112K |
|
1703
PUT
Nexstar Media Group
NXST
$5.6B
| $107K | ﹤0.01% |
304
+236
| +347% | +$14.8K |
|
1704
PUT
Travel + Leisure Co
TNL
$4.54B
| $107K | ﹤0.01% |
+620
| New | +$26.9K |
|
1705
Vanguard Total International Stock ETF
VXUS
$153B
| $107K | ﹤0.01% |
+2,065
| New | +$106K |
|
|
ERF
1706
DELISTED
Enerplus Corporation
ERF
| $107K | ﹤0.01% |
13,197
+7,940
| +151% | +$62.7K |
|
|
DNKN
1707
CALL
DELISTED
Dunkin' Brands Group, Inc.
DNKN
| $107K | ﹤0.01% |
684
+194
| +40% | +$10.8K |
|
1708
BGC Group
BGC
$5.58B
| $106K | ﹤0.01% |
13,148
-12,354
| -48% | -$92.5K |
|
1709
Brookfield Infrastructure Partners
BIP
$18.8B
| $106K | ﹤0.01% |
4,385
+2,004
| +84% | +$47.4K |
|
|
PPLI
1710
People Inc
PPLI
$3.1B
| $106K | ﹤0.01% |
5,763
-11,169
| -66% | -$190K |
|
1711
CALL
KB Home
KBH
$3.48B
| $106K | ﹤0.01% |
653
+356
| +120% | +$7.53K |
|
1712
Minerva Neurosciences
NERV
$188M
| $106K | ﹤0.01% |
+1,504
| New | +$97.3K |
|
1713
CALL
Enviri
NVRI
$621M
| $106K | ﹤0.01% |
357
+280
| +364% | +$4.04K |
|
1714
PUT
SITE Centers
SITC
$230M
| $106K | ﹤0.01% |
558
+77
| +16% | +$1K |
|
1715
CALL
S&P Global
SPGI
$126B
| $106K | ﹤0.01% |
185
+91
| +97% | +$12.6K |
|
|
MXWL
1716
DELISTED
Maxwell Technologies Inc
MXWL
| $106K | ﹤0.01% |
17,742
+2,971
| +20% | +$17.3K |
|
1717
CALL
Masco
MAS
$16B
| $105K | ﹤0.01% |
408
-36
| -8% | -$1.32K |
|
1718
National Fuel Gas
NFG
$7.84B
| $105K | ﹤0.01% |
1,883
+271
| +17% | +$15.3K |
|
1719
Pearson
PSO
$9.78B
| $105K | ﹤0.01% |
11,780
-2,148
| -15% | -$18.7K |
|
|
THS
1720
CALL
DELISTED
Treehouse Foods
THS
| $105K | ﹤0.01% |
87
-82
| -49% | -$6.71K |
|
|
EMWP
1721
PUT
DELISTED
Eros Media World PLC
EMWP
| $105K | ﹤0.01% |
28
+16
| +133% | +$3.27K |
|
|
AKRX
1722
CALL
DELISTED
Akorn Inc
AKRX
| $105K | ﹤0.01% |
362
-24
| -6% | -$782 |
|
|
AFSI
1723
CALL
DELISTED
AmTrust Financial Services, Inc.
AFSI
| $105K | ﹤0.01% |
502
+393
| +361% | +$5.8K |
|
|
FINL
1724
PUT
DELISTED
Finish Line
FINL
| $105K | ﹤0.01% |
911
+218
| +31% | +$3.16K |
|
|
ESPR
1725
CALL
DELISTED
Esperion Therapeutics
ESPR
| $104K | ﹤0.01% |
100
-291
| -74% | -$10.7K |
|
Similar funds
Simplex Trading's Q2 2017 Portfolio in Review
As of Q2 2017, Simplex Trading held 7,527 positions worth $2.3B, down 0.39% from $2.31B the previous quarter. Its ten largest holdings account for 23% of the portfolio.
Simplex Trading withdrew a net $114M in Q2 2017, closing 1,474 positions and reducing 2,320 holdings. Its most notable exit was AT&T, an estimated $19.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 14% of assets, up from 9.7% a quarter earlier, followed by Communication Services and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Amgen worth $32.3M.
- Simplex Trading's largest Q2 2017 buy was Amgen: 187,633 shares worth $32.3M.
- Simplex Trading added most to Amazon in Q2 2017, an estimated $83.1M increase.
- Simplex Trading's biggest Q2 2017 reduction was State Street SPDR S&P 500 ETF Trust, cutting an estimated $29.5M.
- Simplex Trading fully exited AT&T in Q2 2017, selling an estimated $19.6M.
- Simplex Trading's ten largest holdings make up 23% of its $2.3B portfolio in Q2 2017.
- Simplex Trading opened 1,408 new positions and closed 1,474 in Q2 2017.
- Simplex Trading's portfolio value fell 0.39% quarter-over-quarter to $2.3B.
Based on Simplex Trading's 13F filing for Q2 2017, filed 12 Jul 2017.