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 | |
|---|---|---|---|---|---|---|
601
CALL
Analog Devices
ADI
$188B
| $8.36M | 0.01% |
716
+234
| +49% | +$27.4K |
|
602
State Street Industrial Select Sector SPDR ETF
XLI
$33.2B
| $8.35M | 0.01% |
+108,526
| New | +$8.12M |
|
603
PUT
Ford
F
$57.5B
| $8.33M | 0.01% |
12,510
-7,381
| -37% | -$50K |
|
604
CALL
Freeport-McMoran
FCX
$93.4B
| $8.32M | 0.01% |
5,323
-7,650
| -59% | -$110K |
|
605
CALL
Universal Display
OLED
$3.81B
| $8.31M | 0.01% |
460
+67
| +17% | +$11.4K |
|
|
XYZ
606
Block Inc
XYZ
$46.1B
| $8.31M | 0.01% |
+51,111
| New | +$7.22M |
|
607
CALL
Invesco S&P SmallCap Low Volatility ETF
XSLV
$247M
| $8.29M | 0.01% |
1,414
-931
| -40% | -$32K |
|
608
PUT
Cummins
CMI
$91.2B
| $8.26M | 0.01% |
391
-172
| -31% | -$34.3K |
|
609
State Street Utilities Select Sector SPDR ETF
XLU
$23.9B
| $8.16M | 0.01% |
274,762
+216,290
| +370% | +$6.42M |
|
610
PUT
Toll Brothers
TOL
$13.9B
| $8.12M | 0.01% |
1,669
+1,557
| +1,390% | +$63K |
|
611
CALL
Baxter International
BAX
$11.2B
| $8.11M | 0.01% |
1,009
+576
| +133% | +$48.5K |
|
|
TYNS
612
PUT
DELISTED
Direxion Daily 7-10 Year Treasury Bear 1X Shares
TYNS
| $8.09M | 0.01% |
2,351
-1,055
| -31% | -$3.63M |
|
613
PUT
Lumentum
LITE
$64.6B
| $8.05M | 0.01% |
1,072
-484
| -31% | -$40.1K |
|
614
PUT
L3Harris
LHX
$53.1B
| $8.05M | 0.01% |
474
-158
| -25% | -$27.7K |
|
615
PUT
McCormick & Company Non-Voting
MKC
$14B
| $8.04M | 0.01% |
828
+532
| +180% | +$52.1K |
|
|
KSU
616
PUT
DELISTED
Kansas City Southern
KSU
| $8.03M | 0.01% |
444
-118
| -21% | -$20.4K |
|
617
CALL
Franco-Nevada
FNV
$41.3B
| $8.03M | 0.01% |
575
-111
| -16% | -$16.5K |
|
618
CALL
CarMax
KMX
$8.15B
| $8.02M | 0.01% |
873
+275
| +46% | +$27.5K |
|
619
CALL
ProShares Ultra S&P500
SSO
$8.02B
| $8.01M | 0.01% |
8,796
-2,124
| -19% | -$38.2K |
|
620
PUT
QuidelOrtho
QDEL
$1.14B
| $8.01M | 0.01% |
365
-271
| -43% | -$60.5K |
|
621
CALL
ON Semiconductor
ON
$35.9B
| $7.99M | 0.01% |
3,684
+1,027
| +39% | +$21.8K |
|
|
TWTR
622
DELISTED
Twitter, Inc.
TWTR
| $7.98M | 0.01% |
179,256
-198,838
| -53% | -$7.63M |
|
623
CALL
General Mills
GIS
$19.7B
| $7.9M | 0.01% |
1,281
+7
| +0.5% | +$438 |
|
|
KFYP
624
CALL
DELISTED
KraneShares CICC China Leaders 100 Index ETF
KFYP
| $7.86M | 0.01% |
1,156
-213
| -16% | -$6.35K |
|
|
BBBY
625
CALL
DELISTED
Bed Bath & Beyond Inc
BBBY
| $7.84M | 0.01% |
5,231
+272
| +5% | +$3.14K |
|
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.