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 | |
|---|---|---|---|---|---|---|
2351
CALL
Jefferies Financial Group
JEF
$12.9B
| $1.18M | ﹤0.01% |
500
+204
| +69% | +$4.28K |
|
2352
Butterfly Network
BFLY
$1.72B
| $1.17M | ﹤0.01% |
+59,280
| New | +$759K |
|
|
VIEW
2353
DELISTED
View, Inc. Class A Common Stock
VIEW
| $1.17M | ﹤0.01% |
+1,775
| New | +$1.1M |
|
|
AJRD
2354
PUT
DELISTED
Aerojet Rocketdyne Holdings
AJRD
| $1.17M | ﹤0.01% |
222
+144
| +185% | +$5.79K |
|
2355
PUT
HF Sinclair
DINO
$15.9B
| $1.17M | ﹤0.01% |
453
+7
| +2% | +$159 |
|
2356
Consolidated Edison
ED
$41.6B
| $1.17M | ﹤0.01% |
16,206
+7,109
| +78% | +$552K |
|
2357
CALL
Adaptive Biotechnologies
ADPT
$3.56B
| $1.17M | ﹤0.01% |
198
-171
| -46% | -$8.82K |
|
|
VRNT
2358
DELISTED
Verint Systems
VRNT
| $1.17M | ﹤0.01% |
34,190
+32,441
| +1,855% | +$921K |
|
2359
Howmet Aerospace
HWM
$116B
| $1.17M | ﹤0.01% |
40,970
+23,226
| +131% | +$517K |
|
|
RP
2360
PUT
DELISTED
RealPage, Inc.
RP
| $1.17M | ﹤0.01% |
134
-266
| -67% | -$17.4K |
|
2361
CALL
Helmerich & Payne
HP
$3.53B
| $1.17M | ﹤0.01% |
504
-152
| -23% | -$2.95K |
|
|
UFS
2362
CALL
DELISTED
DOMTAR CORPORATION (New)
UFS
| $1.17M | ﹤0.01% |
369
-54
| -13% | -$1.54K |
|
|
BCLI
2363
CALL
DELISTED
BRAINSTORM CELL THERAPUTC
BCLI
| $1.17M | ﹤0.01% |
172
+91
| +112% | +$12.4K |
|
2364
CALL
AptarGroup
ATR
$8.45B
| $1.16M | ﹤0.01% |
85
+9
| +12% | +$1.12K |
|
|
MIK
2365
PUT
DELISTED
Michaels Stores, Inc
MIK
| $1.16M | ﹤0.01% |
894
+228
| +34% | +$2.32K |
|
2366
PUT
Coeur Mining
CDE
$15.6B
| $1.16M | ﹤0.01% |
1,123
+333
| +42% | +$2.73K |
|
2367
PUT
Global Payments
GPN
$22.1B
| $1.16M | ﹤0.01% |
54
-113
| -68% | -$21.1K |
|
2368
APA Corp
APA
$12.8B
| $1.16M | ﹤0.01% |
81,832
+53,551
| +189% | +$623K |
|
2369
HSBC
HSBC
$355B
| $1.16M | ﹤0.01% |
+44,721
| New | +$1.06M |
|
2370
CALL
Kratos Defense & Security Solutions
KTOS
$8.88B
| $1.16M | ﹤0.01% |
422
-389
| -48% | -$8.52K |
|
|
FTCH
2371
DELISTED
Farfetch Limited Class A Ordinary Shares
FTCH
| $1.16M | ﹤0.01% |
18,109
-14,511
| -44% | -$642K |
|
2372
CALL
Range Resources
RRC
$9.11B
| $1.15M | ﹤0.01% |
1,723
-1,040
| -38% | -$7.64K |
|
|
2373
PUT
Butterfly Network
BFLY
$1.72B
| $1.15M | ﹤0.01% |
+582
| New | +$7.45K |
|
2374
CALL
Fomento Económico Mexicano
FMX
$43.3B
| $1.15M | ﹤0.01% |
152
+110
| +262% | +$7.36K |
|
2375
GE Aerospace
GE
$367B
| $1.15M | ﹤0.01% |
21,361
-127,324
| -86% | -$5.7M |
|
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.