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 |
NVIDIA
NVDA
|
+$29.6M |
| 2 |
State Street Industrial Select Sector SPDR ETF
XLI
|
+$22.6M |
| 3 |
iShares Russell 2000 ETF
IWM
|
+$17.9M |
| 4 |
Netflix
NFLX
|
+$17.1M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$13.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Invesco QQQ Trust
QQQ
|
+$123M |
| 2 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$40.6M |
| 3 |
Walt Disney
DIS
|
+$25.6M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$13.5M |
| 5 |
Johnson & Johnson
JNJ
|
+$11.2M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Miscellaneous | 97.48% |
| 2 | Technology | 0.51% |
| 3 | Communication Services | 0.5% |
| 4 | Healthcare | 0.37% |
| 5 | Industrials | 0.31% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
476
CALL
Cheniere Energy
LNG
$60.3B
| $8.17M | 0.02% |
1,194
+428
| +56% | +$28.3K |
|
477
Lockheed Martin
LMT
$121B
| $8.17M | 0.02% |
22,476
+17,135
| +321% | +$5.73M |
|
478
PUT
Match Group
MTCH
$9.61B
| $8.14M | 0.02% |
1,210
-425
| -26% | -$27.8K |
|
479
GE Aerospace
GE
$350B
| $8.1M | 0.02% |
154,858
+22,680
| +17% | +$1.12M |
|
480
State Street Energy Select Sector SPDR ETF
XLE
$42.2B
| $8.08M | 0.02% |
253,646
+59,108
| +30% | +$1.89M |
|
481
CALL
Southwest Airlines
LUV
$19.4B
| $8M | 0.02% |
1,575
-492
| -24% | -$25.5K |
|
482
PUT
Kroger
KR
$35.9B
| $7.98M | 0.02% |
3,677
-1,320
| -26% | -$32.1K |
|
483
CALL
Sea Limited
SE
$68.7B
| $7.98M | 0.02% |
2,402
+1,478
| +160% | +$40.1K |
|
484
CALL
Cognizant
CTSH
$28.1B
| $7.96M | 0.02% |
1,255
+215
| +21% | +$14.1K |
|
485
PUT
Illinois Tool Works
ITW
$76.9B
| $7.92M | 0.02% |
525
+209
| +66% | +$31.6K |
|
486
CALL
Estee Lauder
EL
$37.6B
| $7.89M | 0.02% |
431
+148
| +52% | +$25.3K |
|
487
CALL
S&P Global
SPGI
$131B
| $7.88M | 0.02% |
346
-37
| -10% | -$8.08K |
|
488
CALL
Dominion Energy
D
$57.9B
| $7.87M | 0.02% |
1,018
+333
| +49% | +$25.4K |
|
|
TYNS
489
CALL
DELISTED
Direxion Daily 7-10 Year Treasury Bear 1X Shares
TYNS
| $7.87M | 0.02% |
1,570
+734
| +88% | +$20.1K |
|
490
Pfizer
PFE
$162B
| $7.77M | 0.02% |
189,098
+124,586
| +193% | +$4.95M |
|
491
PUT
HSBC
HSBC
$367B
| $7.73M | 0.02% |
1,852
-2,092
| -53% | -$87.6K |
|
492
CALL
iQIYI
IQ
$849M
| $7.71M | 0.02% |
3,734
-419
| -10% | -$8.66K |
|
|
PPLC
493
CALL
DELISTED
PortfolioPlus S&P 500 ETF
PPLC
| $7.67M | 0.02% |
4,420
-1,503
| -25% | -$58.9K |
|
494
PUT
Zoetis
ZTS
$31.3B
| $7.67M | 0.02% |
676
-236
| -26% | -$24.7K |
|
495
PUT
Ionis Pharmaceuticals
IONS
$9.65B
| $7.65M | 0.02% |
1,191
-947
| -44% | -$66.9K |
|
496
CALL
Newmont
NEM
$135B
| $7.65M | 0.02% |
1,989
-1,477
| -43% | -$49.9K |
|
497
PUT
Universal Display
OLED
$3.78B
| $7.62M | 0.02% |
405
-64
| -14% | -$10.6K |
|
|
SIVB
498
PUT
DELISTED
SVB Financial Group
SIVB
| $7.61M | 0.02% |
339
+261
| +335% | +$60.4K |
|
|
PPLC
499
PUT
DELISTED
PortfolioPlus S&P 500 ETF
PPLC
| $7.59M | 0.02% |
2,254
-1,861
| -45% | -$73K |
|
500
CALL
Hershey
HSY
$34.8B
| $7.59M | 0.02% |
566
+463
| +450% | +$58.8K |
|
Similar funds
Simplex Trading's Q2 2019 Portfolio in Review
As of Q2 2019, Simplex Trading held 8,406 positions worth $36.6B, up 1.9% from $36B the previous quarter. Its ten largest holdings account for 35% of the portfolio.
Simplex Trading's Q2 2019 filing shows 1,261 new, 2,604 increased, 3,015 reduced and 1,300 closed positions. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 105,724 shares worth $14M. The largest sale was Invesco QQQ Trust, an estimated $123M.
By sector, the portfolio is most concentrated in Miscellaneous at 97% of assets, up from 97% a quarter earlier, followed by Technology and Communication Services.
- Simplex Trading's largest Q2 2019 buy was iShares 20+ Year Treasury Bond ETF: 105,724 shares worth $14M.
- Simplex Trading added most to NVIDIA in Q2 2019, an estimated $29.6M increase.
- Simplex Trading's biggest Q2 2019 reduction was State Street SPDR S&P 500 ETF Trust, cutting an estimated $40.6M.
- Simplex Trading fully exited Invesco QQQ Trust in Q2 2019, selling an estimated $123M.
- Simplex Trading's ten largest holdings make up 35% of its $36.6B portfolio in Q2 2019.
- Simplex Trading opened 1,261 new positions and closed 1,300 in Q2 2019.
- Simplex Trading's portfolio value rose 1.9% quarter-over-quarter to $36.6B.
Based on Simplex Trading's 13F filing for Q2 2019, filed 26 Jul 2019.