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 |
Amazon
AMZN
|
+$102M |
| 2 |
TSMC
TSM
|
+$27.8M |
| 3 |
JPMorgan Chase
JPM
|
+$22.4M |
| 4 |
Boeing
BA
|
+$19.4M |
| 5 |
ExxonMobil
XOM
|
+$14.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
SPDR Gold Trust
GLD
|
+$95.5M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$79.6M |
| 3 |
Tesla
TSLA
|
+$75.3M |
| 4 |
NVIDIA
NVDA
|
+$51.6M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.53% |
| 2 | Technology | 0.4% |
| 3 | Healthcare | 0.22% |
| 4 | Financials | 0.21% |
| 5 | Communication Services | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
826
PUT
Dropbox
DBX
$6.63B
| $5.36M | 0.01% |
2,782
+1,825
| +191% | +$38K |
|
|
IPHI
827
PUT
DELISTED
INPHI CORPORATION
IPHI
| $5.34M | 0.01% |
476
+166
| +54% | +$19.4K |
|
|
PPLC
828
PUT
DELISTED
PortfolioPlus S&P 500 ETF
PPLC
| $5.34M | 0.01% |
1,216
-100
| -8% | -$4.53K |
|
829
CALL
BHP
BHP
$212B
| $5.34M | 0.01% |
1,158
-344
| -23% | -$16.6K |
|
|
ANSS
830
CALL
DELISTED
Ansys
ANSS
| $5.33M | 0.01% |
163
-36
| -18% | -$11.3K |
|
831
PUT
Regency Centers
REG
$14.9B
| $5.32M | 0.01% |
1,400
+514
| +58% | +$21.1K |
|
832
PUT
Vail Resorts
MTN
$5.13B
| $5.31M | 0.01% |
248
-159
| -39% | -$32.8K |
|
833
CALL
Toro Company
TTC
$8.72B
| $5.29M | 0.01% |
630
+589
| +1,437% | +$44.1K |
|
834
CALL
ARK Blockchain & Fintech Innovation ETF
ARKF
$723M
| $5.28M | 0.01% |
+626
| New | +$23.2K |
|
835
PUT
Dominion Energy
D
$62.8B
| $5.26M | 0.01% |
667
+206
| +45% | +$16.2K |
|
836
PUT
Valero Energy
VLO
$90.6B
| $5.25M | 0.01% |
1,213
+19
| +2% | +$995 |
|
837
CALL
New Oriental
EDU
$7.85B
| $5.25M | 0.01% |
351
-383
| -52% | -$55.3K |
|
838
PUT
Camping World
CWH
$358M
| $5.24M | 0.01% |
1,762
+80
| +5% | +$2.61K |
|
839
CALL
Thor Industries
THO
$3.9B
| $5.24M | 0.01% |
550
-42
| -7% | -$4.35K |
|
840
PUT
T. Rowe Price
TROW
$24.6B
| $5.22M | 0.01% |
407
-142
| -26% | -$18.8K |
|
841
State Street Technology Select Sector SPDR ETF
XLK
$116B
| $5.21M | 0.01% |
89,336
-294,764
| -77% | -$16.7M |
|
842
PUT
Canadian Solar
CSIQ
$997M
| $5.2M | 0.01% |
1,482
+726
| +96% | +$19.4K |
|
843
PUT
Papa John's
PZZA
$999M
| $5.19M | 0.01% |
631
-2
| -0.3% | -$184 |
|
844
PUT
Ross Stores
ROST
$74.5B
| $5.19M | 0.01% |
556
-396
| -42% | -$35.5K |
|
845
CALL
McCormick & Company Non-Voting
MKC
$13.5B
| $5.18M | 0.01% |
534
+128
| +32% | +$12.5K |
|
846
Electronic Arts
EA
$52.4B
| $5.18M | 0.01% |
39,715
+25,026
| +170% | +$3.41M |
|
847
PUT
Fortinet
FTNT
$111B
| $5.16M | 0.01% |
2,190
-880
| -29% | -$22.7K |
|
848
PUT
AB InBev
BUD
$155B
| $5.16M | 0.01% |
+957
| New | +$53K |
|
849
PUT
International Paper
IP
$20.1B
| $5.13M | 0.01% |
1,337
+576
| +76% | +$20.3K |
|
850
State Street SPDR S&P 500 ETF Trust
SPY
$777B
| $5.13M | 0.01% |
15,323
-1,700
| -10% | -$563K |
|
Similar funds
Simplex Trading's Q3 2020 Portfolio in Review
As of Q3 2020, Simplex Trading held 9,056 positions worth $73.5B, up 17% from $62.7B the previous quarter. Its ten largest holdings account for 43% of the portfolio.
Simplex Trading's Q3 2020 filing shows 1,403 new, 3,135 increased, 3,122 reduced and 1,191 closed positions. Its largest new stake was Goldman Sachs: 60,397 shares worth $12.1M. The largest sale was SPDR Gold Trust, an estimated $95.5M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.53% of assets, up from 0.47% a quarter earlier, followed by Technology and Healthcare.
- Simplex Trading's largest Q3 2020 buy was Goldman Sachs: 60,397 shares worth $12.1M.
- Simplex Trading added most to Amazon in Q3 2020, an estimated $102M increase.
- Simplex Trading's biggest Q3 2020 reduction was SPDR Gold Trust, cutting an estimated $95.5M.
- Simplex Trading fully exited iShares MSCI EAFE ETF in Q3 2020, selling an estimated $40.5M.
- Simplex Trading's ten largest holdings make up 43% of its $73.5B portfolio in Q3 2020.
- Simplex Trading opened 1,403 new positions and closed 1,191 in Q3 2020.
- Simplex Trading's portfolio value rose 17% quarter-over-quarter to $73.5B.
Based on Simplex Trading's 13F filing for Q3 2020, filed 14 Oct 2020.