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 | |
|---|---|---|---|---|---|---|
|
ARI
2751
PUT
Apollo Commercial Real Estate
ARI
$887M
| $378K | ﹤0.01% |
+207
| New | +$3.79K |
|
2752
CALL
Pegasystems
PEGA
$4.41B
| $378K | ﹤0.01% |
138
+130
| +1,625% | +$3.98K |
|
|
OAK
2753
PUT
DELISTED
OAKTREE CAPITAL GROUP, LLC
OAK
| $378K | ﹤0.01% |
93
-67
| -42% | -$2.71K |
|
2754
PUT
Energizer
ENR
$1.44B
| $377K | ﹤0.01% |
60
-16
| -21% | -$941 |
|
2755
Toyota
TM
$210B
| $377K | ﹤0.01% |
2,933
+246
| +9% | +$32.4K |
|
2756
CALL
Aptiv
APTV
$12B
| $376K | ﹤0.01% |
46
+11
| +31% | +$1.03K |
|
2757
Federated Hermes
FHI
$4.4B
| $376K | ﹤0.01% |
16,135
+14,921
| +1,229% | +$399K |
|
2758
PUT
Nokia
NOK
$50.8B
| $376K | ﹤0.01% |
654
+628
| +2,415% | +$3.71K |
|
2759
PUT
Sunoco
SUN
$14.2B
| $376K | ﹤0.01% |
151
+120
| +387% | +$3.19K |
|
|
PRTY
2760
PUT
DELISTED
Party City Holdco Inc.
PRTY
| $376K | ﹤0.01% |
247
-442
| -64% | -$6.79K |
|
|
TOO
2761
PUT
DELISTED
Teekay Offshore Partners L.P.
TOO
| $376K | ﹤0.01% |
1,428
+1,146
| +406% | +$3.04K |
|
|
PR
2762
PUT
Permian Resources
PR
$17.9B
| $375K | ﹤0.01% |
+208
| New | +$3.76K |
|
2763
CALL
Bread Financial
BFH
$4.21B
| $373K | ﹤0.01% |
20
-305
| -94% | -$52.1K |
|
2764
PUT
Banco Santander
SAN
$194B
| $373K | ﹤0.01% |
731
+196
| +37% | +$1.15K |
|
|
BWP
2765
PUT
DELISTED
Boardwalk Pipeline Partners
BWP
| $373K | ﹤0.01% |
321
+241
| +301% | +$2.54K |
|
2766
CALL
Compañía de Minas Buenaventura
BVN
$7.85B
| $372K | ﹤0.01% |
273
+206
| +307% | +$3.21K |
|
|
KEM
2767
DELISTED
KEMET Corporation
KEM
| $372K | ﹤0.01% |
15,410
-26,398
| -63% | -$537K |
|
2768
CALL
Vale
VALE
$62.9B
| $371K | ﹤0.01% |
290
-784
| -73% | -$10.7K |
|
|
WBA
2769
DELISTED
Walgreens Boots Alliance
WBA
| $371K | ﹤0.01% |
6,184
-1,834
| -23% | -$118K |
|
|
JOBS
2770
PUT
DELISTED
51job Inc
JOBS
| $371K | ﹤0.01% |
38
-14
| -27% | -$1.37K |
|
2771
CALL
Apogee Enterprises
APOG
$850M
| $370K | ﹤0.01% |
+77
| New | +$3.31K |
|
|
CYBR
2772
DELISTED
CyberArk
CYBR
| $370K | ﹤0.01% |
+5,887
| New | +$344K |
|
2773
Deutsche Bank
DB
$66.3B
| $370K | ﹤0.01% |
34,914
+5,929
| +20% | +$75.6K |
|
2774
CALL
Hess Midstream
HESM
$5.22B
| $370K | ﹤0.01% |
+188
| New | +$3.79K |
|
|
HIMX
2775
Himax Technologies
HIMX
$2.2B
| $370K | ﹤0.01% |
49,684
+41,605
| +515% | +$307K |
|
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.