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 |
Microsoft
MSFT
|
+$114M |
| 2 |
NVIDIA
NVDA
|
+$85.9M |
| 3 |
Citigroup
C
|
+$61.5M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$45.5M |
| 5 |
Pfizer
PFE
|
+$41.6M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$467M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$71.2M |
| 3 |
Meta Platforms (Facebook)
META
|
+$47.6M |
| 4 |
Intel
INTC
|
+$41.9M |
| 5 |
TSMC
TSM
|
+$35.9M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Miscellaneous | 97.75% |
| 2 | Technology | 0.51% |
| 3 | Financials | 0.35% |
| 4 | Consumer Discretionary | 0.3% |
| 5 | Healthcare | 0.26% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
LAZR
976
CALL
DELISTED
Luminar Technologies
LAZR
| $7.08M | 0.01% |
64,807
+28,760
| +80% | +$3.43M |
|
977
CALL
Academy Sports + Outdoors
ASO
$2.79B
| $7.07M | 0.01% |
167,700
-86,600
| -34% | -$3.79M |
|
978
CALL
Dell
DELL
$339B
| $7.06M | 0.01% |
214,400
-7,000
| -3% | -$295K |
|
979
CALL
Cboe Global Markets
CBOE
$31.2B
| $7.04M | 0.01% |
60,000
+600
| +1% | +$72.2K |
|
|
JKS
980
PUT
JinkoSolar
JKS
$627M
| $7.04M | 0.01% |
127,100
+35,000
| +38% | +$2.15M |
|
|
CALY
981
CALL
Callaway Golf Company
CALY
$2.84B
| $7.04M | 0.01% |
365,300
+222,700
| +156% | +$4.92M |
|
|
GTM
982
PUT
ZoomInfo Technologies
GTM
$1.2B
| $7.03M | 0.01% |
168,800
+14,200
| +9% | +$603K |
|
983
PUT
Brinker International
EAT
$9.62B
| $7.03M | 0.01% |
281,400
+267,000
| +1,854% | +$7.21M |
|
984
RH
RH
$2.8B
| $7.03M | 0.01% |
28,564
-1,556
| -5% | -$420K |
|
|
VMRK
985
PUT
Vivmark Residential
VMRK
$50.6B
| $7.02M | 0.01% |
104,500
+99,900
| +2,172% | +$7.39M |
|
986
CALL
Novavax
NVAX
$1.69B
| $7.02M | 0.01% |
385,800
+106,800
| +38% | +$4.63M |
|
987
CALL
AGNC Investment
AGNC
$12.6B
| $7.01M | 0.01% |
833,100
-677,100
| -45% | -$7.95M |
|
988
CALL
Teucrium Agricultural Fund
TAGS
$21.8M
| $7.01M | 0.01% |
550,300
-320,000
| -37% | -$9.67M |
|
989
PUT
Veeva Systems
VEEV
$44.5B
| $7.01M | 0.01% |
42,500
-16,900
| -28% | -$3.38M |
|
990
CALL
H&R Block
HRB
$6.05B
| $7.01M | 0.01% |
164,700
+124,900
| +314% | +$5.29M |
|
991
PUT
Deutsche Bank
DB
$77.7B
| $6.99M | 0.01% |
945,000
-134,900
| -12% | -$1.15M |
|
|
GRMN
992
PUT
Garmin
GRMN
$53.4B
| $6.99M | 0.01% |
87,000
+20,200
| +30% | +$1.91M |
|
993
CALL
Stanley Black & Decker
SWK
$14.7B
| $6.96M | 0.01% |
92,600
+43,700
| +89% | +$4.2M |
|
994
CALL
Stryker
SYK
$116B
| $6.95M | 0.01% |
34,300
+18,800
| +121% | +$3.95M |
|
|
ISEE
995
CALL
DELISTED
IVERIC bio, Inc. Common Stock
ISEE
| $6.93M | 0.01% |
386,200
+217,600
| +129% | +$2.86M |
|
996
CALL
Centene
CNC
$33.1B
| $6.91M | 0.01% |
88,800
+18,700
| +27% | +$1.67M |
|
997
PUT
Bilibili
BILI
$6.37B
| $6.89M | 0.01% |
449,800
+58,300
| +15% | +$1.33M |
|
998
PUT
Lyft
LYFT
$6.33B
| $6.88M | 0.01% |
522,300
-197,000
| -27% | -$3.03M |
|
999
PUT
Toronto Dominion Bank
TD
$199B
| $6.88M | 0.01% |
112,100
+51,400
| +85% | +$3.33M |
|
|
TCDA
1000
PUT
DELISTED
Tricida, Inc. Common Stock
TCDA
| $6.87M | 0.01% |
655,800
+511,400
| +354% | +$5.59M |
|
Similar funds
Simplex Trading's Q3 2022 Portfolio in Review
As of Q3 2022, Simplex Trading held 11,570 positions worth $88.5B, down 6% from $94.1B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
Simplex Trading's Q3 2022 filing shows 1,566 new, 4,277 increased, 3,850 reduced and 1,574 closed positions. Its largest new stake was Microsoft: 432,062 shares worth $101M. The largest sale was Apple, an estimated $467M.
By sector, the portfolio is most concentrated in Miscellaneous at 98% of assets, up from 97% a quarter earlier, followed by Technology and Financials.
- Simplex Trading's largest Q3 2022 buy was Microsoft: 432,062 shares worth $101M.
- Simplex Trading added most to NVIDIA in Q3 2022, an estimated $85.9M increase.
- Simplex Trading's biggest Q3 2022 reduction was Apple, cutting an estimated $467M.
- Simplex Trading fully exited iShares Core S&P 500 ETF in Q3 2022, selling an estimated $34.3M.
- Simplex Trading's ten largest holdings make up 38% of its $88.5B portfolio in Q3 2022.
- Simplex Trading opened 1,566 new positions and closed 1,574 in Q3 2022.
- Simplex Trading's portfolio value fell 6% quarter-over-quarter to $88.5B.
Based on Simplex Trading's 13F filing for Q3 2022, filed 4 Nov 2022.