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 | |
|---|---|---|---|---|---|---|
501
PUT
Northrop Grumman
NOC
$74.6B
| $10.7M | 0.02% |
347
-505
| -59% | -$166K |
|
502
PUT
Intuitive Surgical
ISRG
$121B
| $10.7M | 0.02% |
561
-2,595
| -82% | -$465K |
|
|
XLNX
503
PUT
DELISTED
Xilinx Inc
XLNX
| $10.7M | 0.02% |
1,083
-391
| -27% | -$34.7K |
|
504
PUT
Palo Alto Networks
PANW
$273B
| $10.6M | 0.02% |
2,772
-3,174
| -53% | -$112K |
|
505
CALL
General Dynamics
GD
$101B
| $10.6M | 0.02% |
709
-52
| -7% | -$7.34K |
|
506
CALL
Paychex
PAYX
$39.4B
| $10.6M | 0.02% |
1,394
-401
| -22% | -$27.8K |
|
507
PUT
Ciena
CIEN
$56.2B
| $10.5M | 0.02% |
1,940
+1,216
| +168% | +$60.4K |
|
508
CALL
Regeneron Pharmaceuticals
REGN
$68.3B
| $10.5M | 0.02% |
168
-566
| -77% | -$321K |
|
509
CALL
Atlassian
TEAM
$21.7B
| $10.5M | 0.02% |
581
+35
| +6% | +$5.81K |
|
510
PUT
Huazhu Hotels Group
HTHT
$12.5B
| $10.5M | 0.02% |
2,983
+2,716
| +1,017% | +$90.3K |
|
|
EXAS
511
PUT
DELISTED
Exact Sciences
EXAS
| $10.4M | 0.02% |
1,199
+203
| +20% | +$16.2K |
|
512
PUT
PG&E
PCG
$39.9B
| $10.4M | 0.02% |
11,699
+4,444
| +61% | +$48.4K |
|
513
CALL
Logitech
LOGI
$15B
| $10.3M | 0.02% |
1,579
+1,540
| +3,949% | +$82K |
|
514
PUT
Kroger
KR
$35.3B
| $10.2M | 0.02% |
3,020
+500
| +20% | +$16.2K |
|
515
CALL
Exelon
EXC
$47.8B
| $10.2M | 0.02% |
3,948
+2,201
| +126% | +$58.4K |
|
|
AYX
516
CALL
DELISTED
Alteryx Inc
AYX
| $10.2M | 0.02% |
621
+17
| +3% | +$2.2K |
|
517
CALL
Chubb
CB
$133B
| $10.1M | 0.02% |
801
-134
| -14% | -$15.5K |
|
518
PUT
Marathon Petroleum
MPC
$92.2B
| $10.1M | 0.02% |
2,707
+1,027
| +61% | +$33K |
|
519
CALL
Enterprise Products Partners
EPD
$84.1B
| $10.1M | 0.02% |
5,556
+3,528
| +174% | +$63.1K |
|
|
ACB
520
CALL
Aurora Cannabis
ACB
$165M
| $10M | 0.02% |
807
+760
| +1,617% | +$86.5K |
|
|
ABMD
521
PUT
DELISTED
Abiomed Inc
ABMD
| $9.95M | 0.02% |
412
+94
| +30% | +$18.9K |
|
522
CALL
Intuit
INTU
$77.8B
| $9.92M | 0.02% |
335
-253
| -43% | -$69.4K |
|
523
PUT
Altria Group
MO
$121B
| $9.9M | 0.02% |
2,522
+453
| +22% | +$17.7K |
|
524
PUT
GDS Holdings
GDS
$6.55B
| $9.86M | 0.02% |
1,238
+1,170
| +1,721% | +$72.4K |
|
525
CALL
American International
AIG
$41.5B
| $9.85M | 0.02% |
3,159
+933
| +42% | +$26.2K |
|
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.