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 | |
|---|---|---|---|---|---|---|
601
PUT
Thermo Fisher Scientific
TMO
$196B
| $8.08M | 0.01% |
223
-407
| -65% | -$136K |
|
602
PUT
Progressive
PGR
$119B
| $8.06M | 0.01% |
1,006
+856
| +571% | +$66.8K |
|
603
PUT
Avis
CAR
$5.81B
| $8.05M | 0.01% |
3,516
+656
| +23% | +$12K |
|
604
CALL
TSMC
TSM
$2.18T
| $8.03M | 0.01% |
1,414
-275
| -16% | -$14.5K |
|
605
PUT
Marvell Technology
MRVL
$189B
| $7.98M | 0.01% |
2,276
+268
| +13% | +$7.85K |
|
606
CALL
Waste Management
WM
$94.9B
| $7.96M | 0.01% |
752
-272
| -27% | -$27.5K |
|
607
CALL
Toronto Dominion Bank
TD
$200B
| $7.93M | 0.01% |
1,777
+601
| +51% | +$25.6K |
|
608
PUT
HDFC Bank
HDB
$119B
| $7.92M | 0.01% |
3,486
+2,038
| +141% | +$41.8K |
|
|
CHL
609
CALL
DELISTED
China Mobile Limited
CHL
| $7.91M | 0.01% |
2,351
+665
| +39% | +$24.6K |
|
610
PUT
AstraZeneca
AZN
$263B
| $7.9M | 0.01% |
747
+344
| +85% | +$35.5K |
|
611
PUT
Dell
DELL
$285B
| $7.89M | 0.01% |
2,835
+1,053
| +59% | +$23.7K |
|
612
PUT
Molina Healthcare
MOH
$11.6B
| $7.87M | 0.01% |
442
-80
| -15% | -$13.6K |
|
613
CALL
General Mills
GIS
$19.7B
| $7.85M | 0.01% |
1,274
-1,083
| -46% | -$65.3K |
|
614
CALL
Nucor
NUE
$53.7B
| $7.79M | 0.01% |
1,880
-790
| -30% | -$31.9K |
|
615
CALL
Blackrock
BLK
$164B
| $7.78M | 0.01% |
143
-17
| -11% | -$8.58K |
|
616
PUT
Arista Networks
ANET
$220B
| $7.77M | 0.01% |
5,920
-2,080
| -26% | -$28.1K |
|
617
Eli Lilly
LLY
$1.04T
| $7.77M | 0.01% |
+47,338
| New | +$7.27M |
|
618
PUT
SLB Ltd
SLB
$71.3B
| $7.77M | 0.01% |
4,225
-1,521
| -26% | -$26.6K |
|
619
PUT
Advance Auto Parts
AAP
$3.35B
| $7.76M | 0.01% |
545
+55
| +11% | +$6.99K |
|
|
FITB
620
CALL
Fifth Third Bancorp
FITB
$52.3B
| $7.75M | 0.01% |
4,021
+279
| +7% | +$5.17K |
|
621
CALL
Nutanix
NTNX
$14.4B
| $7.75M | 0.01% |
3,268
+1,466
| +81% | +$30.4K |
|
622
CALL
Thomson Reuters
TRI
$38.1B
| $7.73M | 0.01% |
1,080
+1,058
| +4,809% | +$76.5K |
|
|
623
CALL
Progressive
PGR
$119B
| $7.71M | 0.01% |
963
+371
| +63% | +$29K |
|
624
CALL
Nutrien
NTR
$32.9B
| $7.71M | 0.01% |
2,401
+2,213
| +1,177% | +$77K |
|
625
PUT
Planet Fitness
PLNT
$4.28B
| $7.7M | 0.01% |
1,271
+372
| +41% | +$22.3K |
|
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.