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 | |
|---|---|---|---|---|---|---|
776
PUT
Cencora
COR
$59.4B
| $6.88M | 0.01% |
704
-86
| -11% | -$8.6K |
|
777
PUT
Zebra Technologies
ZBRA
$12.2B
| $6.88M | 0.01% |
179
+126
| +238% | +$42.4K |
|
778
CALL
Cigna
CI
$75.7B
| $6.87M | 0.01% |
330
-565
| -63% | -$111K |
|
779
PUT
Bath & Body Works
BBWI
$3.9B
| $6.86M | 0.01% |
2,281
+357
| +19% | +$10.4K |
|
780
PUT
DoorDash
DASH
$74B
| $6.85M | 0.01% |
+480
| New | +$76.6K |
|
781
Kohl's
KSS
$2.06B
| $6.84M | 0.01% |
168,124
-7,911
| -4% | -$230K |
|
782
CALL
Air Products & Chemicals
APD
$65.5B
| $6.83M | 0.01% |
250
+15
| +6% | +$4.22K |
|
|
JMIA
783
CALL
Jumia Technologies
JMIA
$734M
| $6.83M | 0.01% |
1,692
+713
| +73% | +$17.4K |
|
784
CALL
McCormick & Company Non-Voting
MKC
$13.5B
| $6.81M | 0.01% |
712
+178
| +33% | +$16.8K |
|
|
NUAN
785
CALL
DELISTED
Nuance Communications, Inc.
NUAN
| $6.8M | 0.01% |
1,542
+928
| +151% | +$35.2K |
|
|
K
786
PUT
DELISTED
Kellanova
K
| $6.78M | 0.01% |
1,161
-54
| -4% | -$3.25K |
|
787
PUT
General Mills
GIS
$19B
| $6.78M | 0.01% |
1,153
-96
| -8% | -$5.81K |
|
|
SPR
788
CALL
DELISTED
Spirit AeroSystems
SPR
| $6.77M | 0.01% |
1,733
-426
| -20% | -$12.2K |
|
789
PUT
Cadence Design Systems
CDNS
$91.1B
| $6.77M | 0.01% |
496
+323
| +187% | +$37.9K |
|
790
iShares Russell 1000 Growth ETF
IWF
$123B
| $6.76M | 0.01% |
+112,076
| New | +$6.38M |
|
791
CALL
Bausch Health
BHC
$1.66B
| $6.75M | 0.01% |
3,247
-1,085
| -25% | -$20.2K |
|
792
Nike
NKE
$60.8B
| $6.75M | 0.01% |
+47,734
| New | +$6.32M |
|
793
ProShares Ultra VIX Short-Term Futures ETF
UVXY
$254M
| $6.74M | 0.01% |
253
+250
| +8,333% | +$9.11M |
|
794
CALL
Tapestry
TPR
$28.1B
| $6.74M | 0.01% |
2,168
-1,496
| -41% | -$37.9K |
|
795
CALL
Newmont
NEM
$101B
| $6.72M | 0.01% |
1,122
-3,933
| -78% | -$242K |
|
|
MIC
796
PUT
DELISTED
Macquarie Infrastructure Holdings, LLC
MIC
| $6.7M | 0.01% |
1,784
+1,362
| +323% | +$41.8K |
|
797
CALL
Rio Tinto
RIO
$149B
| $6.69M | 0.01% |
889
-24
| -3% | -$1.58K |
|
|
MNDT
798
PUT
DELISTED
Mandiant, Inc. Common Stock
MNDT
| $6.67M | 0.01% |
2,893
+908
| +46% | +$14K |
|
799
PUT
Wheaton Precious Metals
WPM
$50B
| $6.67M | 0.01% |
1,597
-508
| -24% | -$22.7K |
|
|
LAZR
800
PUT
DELISTED
Luminar Technologies
LAZR
| $6.66M | 0.01% |
+131
| New | +$34.8K |
|
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.