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 | Technology | 0.51% |
| 2 | Financials | 0.35% |
| 3 | Consumer Discretionary | 0.3% |
| 4 | Healthcare | 0.25% |
| 5 | Industrials | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
901
PUT
Invesco Aerospace & Defense ETF
PPA
$8.27B
| $8.1M | 0.01% |
85,900
+42,500
| +98% | +$3.04M |
|
|
NVO
902
PUT
Novo Nordisk
NVO
$216B
| $8.05M | 0.01% |
161,600
+128,400
| +387% | +$6.88M |
|
903
CALL
ArcelorMittal
MT
$50.4B
| $8.04M | 0.01% |
404,100
-152,600
| -27% | -$3.5M |
|
|
904
CALL
Invesco Aerospace & Defense ETF
PPA
$8.27B
| $8.04M | 0.01% |
125,300
+32,500
| +35% | +$2.32M |
|
905
CALL
Live Nation Entertainment
LYV
$41.2B
| $8.02M | 0.01% |
105,500
-48,400
| -31% | -$4.34M |
|
906
Costco
COST
$415B
| $7.97M | 0.01% |
+16,879
| New | +$8.78M |
|
907
CALL
Darden Restaurants
DRI
$22.5B
| $7.95M | 0.01% |
62,900
-84,900
| -57% | -$10.6M |
|
|
IPFF
908
PUT
DELISTED
iShares International Preferred Stock ETF
IPFF
| $7.93M | 0.01% |
189,200
+25,200
| +15% | +$1.06M |
|
909
CALL
Sherwin-Williams
SHW
$78.3B
| $7.92M | 0.01% |
38,700
-6,200
| -14% | -$1.47M |
|
910
Intuitive Surgical
ISRG
$121B
| $7.92M | 0.01% |
+42,253
| New | +$9.07M |
|
911
PUT
ChargePoint
CHPT
$133M
| $7.88M | 0.01% |
26,685
+8,900
| +50% | +$2.7M |
|
912
PUT
Logitech
LOGI
$15.2B
| $7.88M | 0.01% |
171,200
-42,300
| -20% | -$2.22M |
|
913
CALL
Scorpio Tankers
STNG
$3.96B
| $7.85M | 0.01% |
186,800
-64,400
| -26% | -$2.56M |
|
914
Suncor Energy
SU
$77.7B
| $7.84M | 0.01% |
278,508
+170,574
| +158% | +$5.39M |
|
|
K
915
CALL
DELISTED
Kellanova
K
| $7.84M | 0.01% |
119,813
-150,165
| -56% | -$10.3M |
|
|
SIVB
916
PUT
DELISTED
SVB Financial Group
SIVB
| $7.82M | 0.01% |
23,300
-10,000
| -30% | -$4.03M |
|
917
Tyson Foods
TSN
$20.2B
| $7.79M | 0.01% |
+118,168
| New | +$9.34M |
|
918
CALL
Kimberly-Clark
KMB
$36.4B
| $7.79M | 0.01% |
69,200
-30,100
| -30% | -$3.91M |
|
919
CALL
Elanco Animal Health
ELAN
$12.4B
| $7.78M | 0.01% |
627,000
+599,300
| +2,164% | +$10.5M |
|
920
Verizon
VZ
$194B
| $7.76M | 0.01% |
204,384
-115,568
| -36% | -$5.15M |
|
921
CALL
Hasbro
HAS
$12.6B
| $7.75M | 0.01% |
115,000
+18,700
| +19% | +$1.48M |
|
922
PUT
Enovix
ENVX
$862M
| $7.74M | 0.01% |
482,743
+390,286
| +422% | +$5.76M |
|
923
PUT
Xtrackers MSCI Emerging Markets Hedged Equity ETF
DBEM
$105M
| $7.68M | 0.01% |
283,300
-1,481,400
| -84% | -$32.9M |
|
924
PUT
Paylocity
PCTY
$6.71B
| $7.63M | 0.01% |
+31,600
| New | +$7.26M |
|
925
ASML
ASML
$675B
| $7.63M | 0.01% |
+18,373
| New | +$9.21M |
|
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 1,564 new, 4,281 increased, 3,851 reduced and 1,575 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 Technology at 0.51% of assets, down from 0.84% a quarter earlier, followed by Financials and Consumer Discretionary.
- 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 1,564 new positions and closed 1,575 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.