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 |
Alibaba
BABA
|
+$39.9M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$39M |
| 3 |
Mastercard
MA
|
+$31.3M |
| 4 |
Apple
AAPL
|
+$25.3M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$25.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
JPMorgan Chase
JPM
|
+$52.8M |
| 2 |
TSMC
TSM
|
+$43M |
| 3 |
Amazon
AMZN
|
+$24.7M |
| 4 |
iShares Silver Trust
SLV
|
+$24.2M |
| 5 |
Netflix
NFLX
|
+$21.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Miscellaneous | 97.69% |
| 2 | Consumer Discretionary | 0.65% |
| 3 | Technology | 0.38% |
| 4 | Healthcare | 0.33% |
| 5 | Industrials | 0.21% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1251
CALL
GoDaddy
GDDY
$12B
| $3.55M | ﹤0.01% |
428
-217
| -34% | -$17K |
|
|
KYNB
1252
CALL
Kyntra Bio
KYNB
$33.8M
| $3.55M | ﹤0.01% |
38
+27
| +245% | +$28.4K |
|
1253
PUT
Futu Holdings
FUTU
$16.7B
| $3.53M | ﹤0.01% |
771
+607
| +370% | +$22.8K |
|
1254
CALL
Apollo Global Management
APO
$79.1B
| $3.52M | ﹤0.01% |
718
+28
| +4% | +$1.25K |
|
1255
CALL
Celanese
CE
$4.91B
| $3.51M | ﹤0.01% |
270
-182
| -40% | -$22.6K |
|
1256
PUT
Marathon Digital Holdings
MARA
$4.57B
| $3.5M | ﹤0.01% |
3,352
+2,991
| +829% | +$13.8K |
|
1257
PUT
British American Tobacco
BTI
$119B
| $3.5M | ﹤0.01% |
933
+488
| +110% | +$17.5K |
|
1258
CALL
Aflac
AFL
$57.7B
| $3.5M | ﹤0.01% |
786
-436
| -36% | -$17.8K |
|
|
ANSS
1259
CALL
DELISTED
Ansys
ANSS
| $3.49M | ﹤0.01% |
96
-67
| -41% | -$22.4K |
|
1260
PUT
Hartford Financial Services
HIG
$37B
| $3.49M | ﹤0.01% |
713
+62
| +10% | +$2.67K |
|
1261
PUT
Pan American Silver
PAAS
$21.5B
| $3.49M | ﹤0.01% |
1,011
-430
| -30% | -$13.9K |
|
|
GWPH
1262
CALL
DELISTED
GW Pharmaceuticals Plc American Depositary Shares
GWPH
| $3.48M | ﹤0.01% |
302
-134
| -31% | -$15K |
|
1263
Agnico Eagle Mines
AEM
$104B
| $3.48M | ﹤0.01% |
49,424
+35,730
| +261% | +$2.67M |
|
1264
CALL
Zions Bancorporation
ZION
$10.1B
| $3.48M | ﹤0.01% |
802
+4
| +0.5% | +$148 |
|
1265
PUT
Kinder Morgan
KMI
$70.9B
| $3.48M | ﹤0.01% |
2,544
+13
| +0.5% | +$174 |
|
1266
PUT
United States Natural Gas Fund
UNG
$560M
| $3.47M | ﹤0.01% |
944
-1,054
| -53% | -$45.5K |
|
1267
CALL
Hyliion Holdings
HYLN
$707M
| $3.47M | ﹤0.01% |
2,107
-2,548
| -55% | -$58K |
|
1268
PUT
PennyMac Financial
PFSI
$3.77B
| $3.47M | ﹤0.01% |
529
+260
| +97% | +$15.5K |
|
1269
CALL
Invesco Equal Weight 0-30 Year Treasury ETF
GOVI
$1.22B
| $3.47M | ﹤0.01% |
703
-121
| -15% | -$4.67K |
|
|
FSKR
1270
PUT
DELISTED
FS KKR Capital Corp. II
FSKR
| $3.47M | ﹤0.01% |
2,114
+1
| +0% | +$16 |
|
1271
PUT
Howard Hughes
HHH
$3.81B
| $3.46M | ﹤0.01% |
461
+314
| +214% | +$21K |
|
1272
PUT
Sunoco
SUN
$14.5B
| $3.46M | ﹤0.01% |
1,203
+740
| +160% | +$20.1K |
|
|
NVRO
1273
CALL
DELISTED
NEVRO CORP.
NVRO
| $3.46M | ﹤0.01% |
200
+93
| +87% | +$15.1K |
|
1274
CALL
Wheaton Precious Metals
WPM
$70.9B
| $3.46M | ﹤0.01% |
829
-1,626
| -66% | -$72.6K |
|
|
K
1275
DELISTED
Kellanova
K
| $3.46M | ﹤0.01% |
59,177
+39,823
| +206% | +$2.39M |
|
Similar funds
Simplex Trading's Q4 2020 Portfolio in Review
As of Q4 2020, Simplex Trading held 9,568 positions worth $77.2B, up 5% from $73.5B the previous quarter. Its ten largest holdings account for 42% of the portfolio.
Simplex Trading's Q4 2020 filing shows 1,710 new, 3,401 increased, 3,105 reduced and 1,157 closed positions. Its largest new stake was Alibaba: 143,630 shares worth $33.4M. The largest sale was JPMorgan Chase, an estimated $52.8M.
By sector, the portfolio is most concentrated in Miscellaneous at 98% of assets, down from 98% a quarter earlier, followed by Consumer Discretionary and Technology.
- Simplex Trading's largest Q4 2020 buy was Alibaba: 143,630 shares worth $33.4M.
- Simplex Trading added most to Invesco QQQ Trust in Q4 2020, an estimated $39M increase.
- Simplex Trading's biggest Q4 2020 reduction was JPMorgan Chase, cutting an estimated $52.8M.
- Simplex Trading fully exited Target in Q4 2020, selling an estimated $14.3M.
- Simplex Trading's ten largest holdings make up 42% of its $77.2B portfolio in Q4 2020.
- Simplex Trading opened 1,710 new positions and closed 1,157 in Q4 2020.
- Simplex Trading's portfolio value rose 5% quarter-over-quarter to $77.2B.
Based on Simplex Trading's 13F filing for Q4 2020, filed 2 Feb 2021.