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 | Consumer Discretionary | 0.65% |
| 2 | Technology | 0.37% |
| 3 | Healthcare | 0.33% |
| 4 | Industrials | 0.21% |
| 5 | Communication Services | 0.19% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
DCP
1301
CALL
DELISTED
DCP Midstream, LP
DCP
| $3.32M | ﹤0.01% |
1,795
-44
| -2% | -$692 |
|
1302
PUT
Revvity
RVTY
$12.4B
| $3.31M | ﹤0.01% |
231
+170
| +279% | +$22.6K |
|
1303
CALL
Guidewire Software
GWRE
$11.5B
| $3.31M | ﹤0.01% |
257
+204
| +385% | +$23.3K |
|
1304
CALL
BlackBerry
BB
$5.03B
| $3.3M | ﹤0.01% |
4,983
+1,856
| +59% | +$11K |
|
|
MOMO
1305
CALL
Hello Group
MOMO
$870M
| $3.3M | ﹤0.01% |
2,365
+675
| +40% | +$9.76K |
|
|
FOCS
1306
PUT
DELISTED
Focus Financial Partners Inc. Class A
FOCS
| $3.3M | ﹤0.01% |
759
+461
| +155% | +$18.5K |
|
1307
CALL
Bread Financial
BFH
$4.15B
| $3.3M | ﹤0.01% |
558
-122
| -18% | -$6.13K |
|
1308
PUT
American Well
AMWL
$181M
| $3.29M | ﹤0.01% |
65
+63
| +3,150% | +$36.5K |
|
|
MFA
1309
PUT
MFA Financial
MFA
$934M
| $3.29M | ﹤0.01% |
2,118
+199
| +10% | +$2.68K |
|
|
MOMO
1310
PUT
Hello Group
MOMO
$870M
| $3.29M | ﹤0.01% |
2,361
+346
| +17% | +$5K |
|
|
DM
1311
CALL
DELISTED
Desktop Metal, Inc.
DM
| $3.29M | ﹤0.01% |
191
+162
| +559% | +$21.4K |
|
|
GBT
1312
CALL
DELISTED
Global Blood Therapeutics, Inc.
GBT
| $3.28M | ﹤0.01% |
758
+629
| +488% | +$31K |
|
1313
CALL
Turning Point Brands
TPB
$1.48B
| $3.27M | ﹤0.01% |
735
+612
| +498% | +$23.1K |
|
1314
Dropbox
DBX
$6.81B
| $3.27M | ﹤0.01% |
147,413
+23,663
| +19% | +$482K |
|
1315
PUT
Macerich
MAC
$7.33B
| $3.27M | ﹤0.01% |
3,064
+843
| +38% | +$7.66K |
|
1316
CALL
LKQ Corp
LKQ
$6.58B
| $3.27M | ﹤0.01% |
927
-224
| -19% | -$7.66K |
|
1317
CALL
Group 1 Automotive
GPI
$3.97B
| $3.27M | ﹤0.01% |
249
-566
| -69% | -$68.1K |
|
1318
PUT
Amplify Junior Silver Miners ETF
SILJ
$3.29B
| $3.26M | ﹤0.01% |
1,829
+353
| +24% | +$5.15K |
|
|
NVO
1319
PUT
Novo Nordisk
NVO
$216B
| $3.26M | ﹤0.01% |
934
+156
| +20% | +$5.39K |
|
1320
Datadog
DDOG
$87.8B
| $3.26M | ﹤0.01% |
33,091
+2,673
| +9% | +$267K |
|
|
SBNY
1321
PUT
DELISTED
Signature Bank
SBNY
| $3.25M | ﹤0.01% |
240
-221
| -48% | -$23.1K |
|
1322
PUT
PPG Industries
PPG
$26B
| $3.24M | ﹤0.01% |
225
-21
| -9% | -$2.92K |
|
1323
CALL
Five Below
FIVE
$11.3B
| $3.24M | ﹤0.01% |
185
+9
| +5% | +$1.33K |
|
1324
CALL
Lightspeed Commerce
LSPD
$1.3B
| $3.24M | ﹤0.01% |
+460
| New | +$21.3K |
|
1325
PUT
Eaton
ETN
$158B
| $3.23M | ﹤0.01% |
269
-173
| -39% | -$19.6K |
|
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 1,711 new, 3,402 increased, 3,106 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 Consumer Discretionary at 0.65% of assets, up from 0.53% a quarter earlier, followed by Technology and Healthcare.
- 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 1,711 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.