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 |
Apple
AAPL
|
+$34.5M |
| 2 |
Micron Technology
MU
|
+$33.9M |
| 3 |
Berkshire Hathaway Class B
BRK.B
|
+$30.8M |
| 4 |
NVIDIA
NVDA
|
+$23.5M |
| 5 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$22.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
TWX
Time Warner Inc
TWX
|
+$34.8M |
| 2 |
Amazon
AMZN
|
+$31.2M |
| 3 |
Tesla
TSLA
|
+$17.6M |
| 4 |
Netflix
NFLX
|
+$15.5M |
| 5 |
Advanced Micro Devices
AMD
|
+$12.9M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 1.23% |
| 2 | Consumer Discretionary | 0.92% |
| 3 | Communication Services | 0.73% |
| 4 | Financials | 0.62% |
| 5 | Industrials | 0.6% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1776
PUT
Nucor
NUE
$56.4B
| $1.02M | ﹤0.01% |
163
+9
| +6% | +$574 |
|
1777
CALL
Hartford Financial Services
HIG
$38.5B
| $1.02M | ﹤0.01% |
199
+169
| +563% | +$8.85K |
|
1778
PUT
Tenet Healthcare
THC
$20.1B
| $1.02M | ﹤0.01% |
303
+108
| +55% | +$3.36K |
|
|
BPMC
1779
CALL
DELISTED
Blueprint Medicines
BPMC
| $1.01M | ﹤0.01% |
160
+100
| +167% | +$7.96K |
|
1780
CALL
Fossil Group
FOSL
$239M
| $1.01M | ﹤0.01% |
378
-368
| -49% | -$7.54K |
|
1781
PUT
Air Products & Chemicals
APD
$66.3B
| $1.01M | ﹤0.01% |
65
-80
| -55% | -$13.1K |
|
1782
Advance Auto Parts
AAP
$3.37B
| $1.01M | ﹤0.01% |
+7,452
| New | +$905K |
|
1783
PUT
Qualys
QLYS
$4.84B
| $1.01M | ﹤0.01% |
120
+112
| +1,400% | +$9K |
|
1784
CALL
BWX Technologies
BWXT
$16B
| $1.01M | ﹤0.01% |
162
+77
| +91% | +$5.12K |
|
1785
Invesco CurrencyShares Euro Currency Trust
FXE
$331M
| $1.01M | ﹤0.01% |
9,007
-20,727
| -70% | -$2.37M |
|
1786
PUT
FMC
FMC
$1.42B
| $1.01M | ﹤0.01% |
130
+84
| +183% | +$6.23K |
|
1787
PUT
JB Hunt Transport Services
JBHT
$27.1B
| $1.01M | ﹤0.01% |
83
-31
| -27% | -$3.79K |
|
1788
PUT
Realty Income
O
$61.2B
| $1M | ﹤0.01% |
193
-297
| -61% | -$15.1K |
|
|
SRCL
1789
PUT
DELISTED
Stericycle Inc
SRCL
| $1M | ﹤0.01% |
154
+38
| +33% | +$2.36K |
|
1790
PUT
Sysco
SYY
$39.7B
| $1M | ﹤0.01% |
147
+91
| +163% | +$5.81K |
|
|
SIX
1791
CALL
DELISTED
Six Flags Entertainment Corp.
SIX
| $1M | ﹤0.01% |
143
+111
| +347% | +$7.25K |
|
1792
CALL
Williams-Sonoma
WSM
$26.7B
| $1M | ﹤0.01% |
326
-134
| -29% | -$3.59K |
|
|
TLRD
1793
CALL
DELISTED
Tailored Brands, Inc.
TLRD
| $1M | ﹤0.01% |
392
+278
| +244% | +$8.45K |
|
1794
PUT
H.B. Fuller
FUL
$3B
| $998K | ﹤0.01% |
186
+175
| +1,591% | +$9.09K |
|
1795
PUT
OFG Bancorp
OFG
$2.21B
| $997K | ﹤0.01% |
710
+71
| +11% | +$960 |
|
1796
PUT
iShares Silver Trust
SLV
$28.1B
| $996K | ﹤0.01% |
658
-31
| -4% | -$483 |
|
1797
AES
AES
$10.6B
| $995K | ﹤0.01% |
74,220
+63,372
| +584% | +$780K |
|
1798
CNX Resources
CNX
$4.85B
| $994K | ﹤0.01% |
55,938
+43,343
| +344% | +$695K |
|
1799
PUT
Packaging Corp of America
PKG
$22.7B
| $994K | ﹤0.01% |
89
+65
| +271% | +$7.59K |
|
1800
Melco Resorts & Entertainment
MLCO
$2.1B
| $993K | ﹤0.01% |
+35,491
| New | +$1.09M |
|
Similar funds
Simplex Trading's Q2 2018 Portfolio in Review
As of Q2 2018, Simplex Trading held 8,400 positions worth $25.5B, up 1,022% from $2.27B the previous quarter. Its ten largest holdings account for 29% of the portfolio.
Simplex Trading's Q2 2018 filing shows 2,282 new, 2,314 increased, 2,591 reduced and 1,035 closed positions. Its largest new stake was Alphabet (Google) Class C: 291,860 shares worth $16.3M. The largest sale was Time Warner Inc, an estimated $34.8M.
By sector, the portfolio is most concentrated in Technology at 1.2% of assets, down from 6.2% a quarter earlier, followed by Consumer Discretionary and Communication Services.
- Simplex Trading's largest Q2 2018 buy was Alphabet (Google) Class C: 291,860 shares worth $16.3M.
- Simplex Trading added most to Apple in Q2 2018, an estimated $34.5M increase.
- Simplex Trading's biggest Q2 2018 reduction was Amazon, cutting an estimated $31.2M.
- Simplex Trading fully exited Time Warner Inc in Q2 2018, selling an estimated $34.8M.
- Simplex Trading's ten largest holdings make up 29% of its $25.5B portfolio in Q2 2018.
- Simplex Trading opened 2,282 new positions and closed 1,035 in Q2 2018.
- Simplex Trading's portfolio value rose 1,022% quarter-over-quarter to $25.5B.
Based on Simplex Trading's 13F filing for Q2 2018, filed 30 Jul 2018.