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
|
+$170M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$71.3M |
| 3 |
AT&T
T
|
+$44.2M |
| 4 |
Meta Platforms (Facebook)
META
|
+$37.1M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$34.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Microsoft
MSFT
|
+$94.3M |
| 2 |
JPMorgan Chase
JPM
|
+$68.2M |
| 3 |
Citigroup
C
|
+$62.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$50.9M |
| 5 |
SPDR Gold Trust
GLD
|
+$46.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.38% |
| 2 | Technology | 0.35% |
| 3 | Communication Services | 0.24% |
| 4 | Healthcare | 0.2% |
| 5 | Consumer Staples | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
351
CALL
Invesco DB US Dollar Index Bullish Fund
UUP
$432M
| $36.8M | 0.04% |
1,464,800
-616,500
| -30% | -$18M |
|
|
SHNY
352
CALL
DELISTED
Direxion Daily Silver Miners Index Bull 2X Shares
SHNY
| $36.8M | 0.04% |
1,662,800
+279,400
| +20% | +$6.18M |
|
353
CALL
Strategy Inc
MSTR
$36.3B
| $36.8M | 0.04% |
2,597,000
+1,350,000
| +108% | +$27.6M |
|
354
Tesla
TSLA
$1.4T
| $36.7M | 0.04% |
297,832
+102,882
| +53% | +$19.5M |
|
355
PUT
Nucor
NUE
$53.7B
| $36.6M | 0.04% |
277,500
+88,100
| +47% | +$12M |
|
356
CALL
EOG Resources
EOG
$76.7B
| $36.5M | 0.04% |
281,900
-6,000
| -2% | -$798K |
|
357
PUT
Carnival Corporation Ltd
CCL
$35.7B
| $36.4M | 0.04% |
4,510,900
+1,820,300
| +68% | +$15.7M |
|
358
PUT
Tyson Foods
TSN
$20.1B
| $36.1M | 0.04% |
579,300
-129,200
| -18% | -$8.4M |
|
359
PUT
SolarEdge
SEDG
$2.91B
| $35.9M | 0.04% |
126,700
-2,700
| -2% | -$716K |
|
360
CALL
Roblox
RBLX
$35.5B
| $35.9M | 0.04% |
1,260,300
-63,500
| -5% | -$2.23M |
|
361
CALL
Kraft Heinz
KHC
$30.8B
| $35.8M | 0.04% |
879,100
+326,100
| +59% | +$12.4M |
|
362
CALL
eBay
EBAY
$49.3B
| $35.7M | 0.04% |
861,400
-101,300
| -11% | -$4.2M |
|
363
CALL
Generac Holdings
GNRC
$12.6B
| $35.7M | 0.04% |
354,600
+112,100
| +46% | +$12.7M |
|
364
PUT
Petrobras
PBR
$122B
| $35.6M | 0.04% |
3,350,600
-538,200
| -14% | -$6.5M |
|
365
PUT
Northrop Grumman
NOC
$74.6B
| $35.4M | 0.04% |
64,900
+17,500
| +37% | +$9.13M |
|
|
366
iShares MSCI Emerging Markets ETF
EEM
$28.8B
| $35.4M | 0.04% |
+932,756
| New | +$34.4M |
|
367
PUT
United States Oil Fund
USO
$2.36B
| $35.3M | 0.04% |
503,100
-36,600
| -7% | -$2.56M |
|
|
ATVI
368
CALL
DELISTED
Activision Blizzard
ATVI
| $35.1M | 0.04% |
459,000
+65,100
| +17% | +$4.83M |
|
369
PUT
Vanguard FTSE Europe ETF
VGK
$30.2B
| $35.1M | 0.04% |
707,700
+151,700
| +27% | +$8.01M |
|
370
PUT
Chipotle Mexican Grill
CMG
$41.3B
| $35.1M | 0.04% |
1,265,000
-530,000
| -30% | -$15.8M |
|
371
PUT
Hasbro
HAS
$12.6B
| $35.1M | 0.04% |
575,300
+414,400
| +258% | +$25.9M |
|
372
CALL
MetLife
MET
$60B
| $35M | 0.04% |
483,600
-18,900
| -4% | -$1.35M |
|
373
CALL
Delta Air Lines
DAL
$54.9B
| $34.8M | 0.04% |
1,058,900
+66,800
| +7% | +$2.21M |
|
374
CALL
ProShares Ultra Bloomberg Natural Gas
BOIL
$422M
| $34.4M | 0.04% |
17,116
+4,846
| +39% | +$37.8M |
|
375
PUT
Chewy
CHWY
$8.81B
| $34.2M | 0.04% |
921,900
+187,900
| +26% | +$7.32M |
|
Similar funds
Simplex Trading's Q4 2022 Portfolio in Review
As of Q4 2022, Simplex Trading held 11,206 positions worth $91.9B, up 3.9% from $88.5B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
Simplex Trading's Q4 2022 filing shows 1,219 new, 3,365 increased, 4,370 reduced and 1,942 closed positions. Its largest new stake was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M. The largest sale was Microsoft, an estimated $94.3M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.38% of assets, up from 0.3% a quarter earlier, followed by Technology and Communication Services.
- Simplex Trading's largest Q4 2022 buy was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M.
- Simplex Trading added most to Amazon in Q4 2022, an estimated $170M increase.
- Simplex Trading's biggest Q4 2022 reduction was Microsoft, cutting an estimated $94.3M.
- Simplex Trading fully exited JPMorgan Chase in Q4 2022, selling an estimated $68.2M.
- Simplex Trading's ten largest holdings make up 34% of its $91.9B portfolio in Q4 2022.
- Simplex Trading opened 1,219 new positions and closed 1,942 in Q4 2022.
- Simplex Trading's portfolio value rose 3.9% quarter-over-quarter to $91.9B.
Based on Simplex Trading's 13F filing for Q4 2022, filed 2 Feb 2023.