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 |
Invesco QQQ Trust
QQQ
|
+$77.3M |
| 2 |
SPDR Gold Trust
GLD
|
+$73.2M |
| 3 |
iShares MSCI EAFE ETF
EFA
|
+$38.5M |
| 4 |
Netflix
NFLX
|
+$38.4M |
| 5 |
NVIDIA
NVDA
|
+$36.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$55.9M |
| 2 |
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
|
+$28.3M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$23.1M |
| 4 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$23.1M |
| 5 |
Adobe
ADBE
|
+$22M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.49% |
| 2 | Consumer Discretionary | 0.47% |
| 3 | Communication Services | 0.34% |
| 4 | Healthcare | 0.26% |
| 5 | Financials | 0.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
651
PUT
Dow Inc
DOW
$22.5B
| $7.34M | 0.01% |
1,801
+337
| +23% | +$12.3K |
|
652
PUT
Halliburton
HAL
$27.6B
| $7.3M | 0.01% |
5,624
+1,283
| +30% | +$13.8K |
|
653
CALL
Thermo Fisher Scientific
TMO
$196B
| $7.28M | 0.01% |
201
-50
| -20% | -$16.8K |
|
654
Moderna
MRNA
$23B
| $7.28M | 0.01% |
113,405
-5,413
| -5% | -$296K |
|
655
CALL
Automatic Data Processing
ADP
$97.2B
| $7.26M | 0.01% |
488
-60
| -11% | -$8.59K |
|
656
CALL
GDS Holdings
GDS
$6.55B
| $7.23M | 0.01% |
908
+272
| +43% | +$16.8K |
|
657
CALL
Markel Group
MKL
$24.3B
| $7.2M | 0.01% |
78
+5
| +7% | +$4.54K |
|
658
PUT
Hyatt Hotels
H
$17.6B
| $7.19M | 0.01% |
1,430
+775
| +118% | +$41.3K |
|
659
CALL
Check Point Software Technologies
CHKP
$13.3B
| $7.19M | 0.01% |
669
+284
| +74% | +$30.1K |
|
660
PUT
Freeport-McMoran
FCX
$93.4B
| $7.17M | 0.01% |
6,200
-2,575
| -29% | -$23.6K |
|
661
PUT
Best Buy
BBY
$18.4B
| $7.16M | 0.01% |
820
+49
| +6% | +$3.71K |
|
|
IPFF
662
PUT
DELISTED
iShares International Preferred Stock ETF
IPFF
| $7.15M | 0.01% |
4,708
-7,803
| -62% | -$92.9K |
|
663
CALL
Archer Daniels Midland
ADM
$42.1B
| $7.14M | 0.01% |
1,790
+411
| +30% | +$15.4K |
|
664
ProShares UltraPro S&P 500
UPRO
$5.28B
| $7.11M | 0.01% |
320,616
+199,764
| +165% | +$3.88M |
|
665
PUT
Illumina
ILMN
$28.9B
| $7.11M | 0.01% |
197
-185
| -48% | -$59.5K |
|
666
CALL
Darden Restaurants
DRI
$22.2B
| $7.11M | 0.01% |
938
+167
| +22% | +$11.8K |
|
667
CALL
Fastenal
FAST
$52B
| $7.1M | 0.01% |
3,316
+2,626
| +381% | +$50.2K |
|
668
CALL
TransDigm Group
TDG
$66.8B
| $7.07M | 0.01% |
160
+145
| +967% | +$54.9K |
|
669
CALL
Dollar Tree
DLTR
$23.5B
| $7.06M | 0.01% |
762
-489
| -39% | -$40.8K |
|
670
CALL
Align Technology
ALGN
$12.4B
| $7.05M | 0.01% |
257
-545
| -68% | -$123K |
|
671
CALL
United States Natural Gas Fund
UNG
$472M
| $7.04M | 0.01% |
1,714
+1,115
| +186% | +$53.1K |
|
672
PUT
Valero Energy
VLO
$92.3B
| $7.02M | 0.01% |
1,194
+339
| +40% | +$20.2K |
|
673
PUT
Estee Lauder
EL
$29.9B
| $7.02M | 0.01% |
372
-184
| -33% | -$32.9K |
|
674
PUT
Corpay
CPAY
$23.5B
| $6.99M | 0.01% |
278
-19
| -6% | -$4.51K |
|
675
PUT
Alcon
ALC
$32.8B
| $6.98M | 0.01% |
1,218
+994
| +444% | +$56.3K |
|
Similar funds
Simplex Trading's Q2 2020 Portfolio in Review
As of Q2 2020, Simplex Trading held 8,917 positions worth $62.7B, up 11% from $56.7B the previous quarter. Its ten largest holdings account for 44% of the portfolio.
Simplex Trading's Q2 2020 filing shows 1,290 new, 3,427 increased, 2,723 reduced and 1,278 closed positions. Its largest new stake was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M. The largest sale was Apple, an estimated $55.9M.
By sector, the portfolio is most concentrated in Technology at 0.49% of assets, up from 0.49% a quarter earlier, followed by Consumer Discretionary and Communication Services.
- Simplex Trading's largest Q2 2020 buy was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M.
- Simplex Trading added most to Invesco QQQ Trust in Q2 2020, an estimated $77.3M increase.
- Simplex Trading's biggest Q2 2020 reduction was Apple, cutting an estimated $55.9M.
- Simplex Trading fully exited Adobe in Q2 2020, selling an estimated $22M.
- Simplex Trading's ten largest holdings make up 44% of its $62.7B portfolio in Q2 2020.
- Simplex Trading opened 1,290 new positions and closed 1,278 in Q2 2020.
- Simplex Trading's portfolio value rose 11% quarter-over-quarter to $62.7B.
Based on Simplex Trading's 13F filing for Q2 2020, filed 13 Jul 2020.