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 | |
|---|---|---|---|---|---|---|
1276
CALL
American Water Works
AWK
$26.3B
| $3.45M | ﹤0.01% |
225
+204
| +971% | +$31.4K |
|
1277
Skyworks Solutions
SWKS
$9.09B
| $3.45M | ﹤0.01% |
+22,590
| New | +$3.31M |
|
1278
CALL
International Flavors & Fragrances
IFF
$19.4B
| $3.45M | ﹤0.01% |
317
-779
| -71% | -$87.4K |
|
1279
NVIDIA
NVDA
$5.1T
| $3.44M | ﹤0.01% |
263,720
+186,320
| +241% | +$2.49M |
|
1280
PUT
CenterPoint Energy
CNP
$29B
| $3.44M | ﹤0.01% |
1,588
+1,388
| +694% | +$30.8K |
|
1281
CALL
Parker-Hannifin
PH
$125B
| $3.43M | ﹤0.01% |
126
+13
| +12% | +$3.22K |
|
|
VRNT
1282
PUT
DELISTED
Verint Systems
VRNT
| $3.43M | ﹤0.01% |
1,003
-96
| -9% | -$2.73K |
|
1283
PUT
Kinross Gold
KGC
$28.8B
| $3.43M | ﹤0.01% |
4,669
+2,015
| +76% | +$16.1K |
|
1284
CALL
Macerich
MAC
$7.32B
| $3.42M | ﹤0.01% |
3,205
+905
| +39% | +$8.22K |
|
|
SMAR
1285
CALL
DELISTED
Smartsheet Inc.
SMAR
| $3.42M | ﹤0.01% |
493
-177
| -26% | -$10.4K |
|
|
ZUO
1286
CALL
DELISTED
Zuora, Inc.
ZUO
| $3.41M | ﹤0.01% |
2,447
+1,127
| +85% | +$12.8K |
|
|
UFS
1287
PUT
DELISTED
DOMTAR CORPORATION (New)
UFS
| $3.4M | ﹤0.01% |
1,073
+1,040
| +3,152% | +$29.6K |
|
1288
STMicroelectronics
STM
$47.2B
| $3.39M | ﹤0.01% |
+91,442
| New | +$3.24M |
|
1289
PUT
Eastman Chemical
EMN
$7.86B
| $3.39M | ﹤0.01% |
338
+132
| +64% | +$12.2K |
|
1290
ARK Blockchain & Fintech Innovation ETF
ARKF
$725M
| $3.38M | ﹤0.01% |
68,105
+31,991
| +89% | +$1.44M |
|
1291
CALL
Toronto Dominion Bank
TD
$198B
| $3.38M | ﹤0.01% |
599
-34
| -5% | -$1.72K |
|
|
IPHI
1292
PUT
DELISTED
INPHI CORPORATION
IPHI
| $3.37M | ﹤0.01% |
210
-266
| -56% | -$37.4K |
|
|
NVTA
1293
DELISTED
Invitae Corporation
NVTA
| $3.36M | ﹤0.01% |
80,406
+72,396
| +904% | +$3.46M |
|
|
RIDE
1294
PUT
DELISTED
Lordstown Motors Corp. Class A Common Stock
RIDE
| $3.36M | ﹤0.01% |
112
+101
| +918% | +$31.8K |
|
|
RMO
1295
CALL
DELISTED
Romeo Power, Inc.
RMO
| $3.35M | ﹤0.01% |
+1,492
| New | +$21.8K |
|
1296
CALL
Vanguard Total Bond Market
BND
$158B
| $3.35M | ﹤0.01% |
380
+352
| +1,257% | +$31K |
|
1297
Viatris
VTRS
$20.2B
| $3.35M | ﹤0.01% |
178,702
+23,588
| +15% | +$385K |
|
|
NOAH
1298
PUT
Noah Holdings
NOAH
$590M
| $3.34M | ﹤0.01% |
698
+660
| +1,737% | +$21.3K |
|
1299
Airbnb
ABNB
$84B
| $3.33M | ﹤0.01% |
+22,690
| New | +$3.35M |
|
1300
PUT
Hewlett Packard
HPE
$64.8B
| $3.33M | ﹤0.01% |
2,809
-505
| -15% | -$5.3K |
|
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.