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 | |
|---|---|---|---|---|---|---|
801
CALL
AutoZone
AZO
$47.8B
| $10.1M | 0.01% |
4,700
-3,000
| -39% | -$6.54M |
|
|
SPWR
802
CALL
DELISTED
SunPower Corporation Common Stock
SPWR
| $10.1M | 0.01% |
436,300
+140,000
| +47% | +$3.15M |
|
803
Delta Air Lines
DAL
$56.1B
| $10M | 0.01% |
357,476
+166,000
| +87% | +$5.27M |
|
|
IAA
804
CALL
DELISTED
IAA, Inc. Common Stock
IAA
| $10M | 0.01% |
314,800
+32,100
| +11% | +$1.14M |
|
805
PUT
Markel Group
MKL
$24.8B
| $9.97M | 0.01% |
9,200
+5,200
| +130% | +$6.34M |
|
806
CALL
Exelon
EXC
$48.4B
| $9.95M | 0.01% |
345,500
-59,500
| -15% | -$2.63M |
|
807
CALL
Mondelez International
MDLZ
$77.4B
| $9.94M | 0.01% |
181,300
-81,800
| -31% | -$5.08M |
|
808
CALL
Coherent
COHR
$56.7B
| $9.94M | 0.01% |
285,100
+99,600
| +54% | +$4.77M |
|
809
British American Tobacco
BTI
$132B
| $9.93M | 0.01% |
279,633
+86,824
| +45% | +$3.48M |
|
810
PUT
Cadence Design Systems
CDNS
$92.1B
| $9.92M | 0.01% |
60,700
+44,100
| +266% | +$7.58M |
|
811
CALL
Equinor
EQNR
$96B
| $9.92M | 0.01% |
299,500
+52,000
| +21% | +$1.88M |
|
812
PUT
Five Below
FIVE
$11.3B
| $9.9M | 0.01% |
71,900
-7,400
| -9% | -$972K |
|
813
PUT
International Paper
IP
$21.3B
| $9.87M | 0.01% |
311,800
+17,000
| +6% | +$695K |
|
814
CALL
Truist Financial
TFC
$63.1B
| $9.78M | 0.01% |
224,600
+59,900
| +36% | +$2.88M |
|
815
CALL
ZIM Integrated Shipping Services
ZIM
$3.04B
| $9.75M | 0.01% |
415,000
+138,900
| +50% | +$5.74M |
|
816
CALL
Archer Daniels Midland
ADM
$41.6B
| $9.74M | 0.01% |
121,100
-100,300
| -45% | -$8.26M |
|
817
CALL
Sarepta Therapeutics
SRPT
$1.67B
| $9.74M | 0.01% |
88,100
+62,400
| +243% | +$6.29M |
|
818
CALL
FT Vest Gold Strategy Target Income ETF
IGLD
$508M
| $9.72M | 0.01% |
129,400
+19,900
| +18% | +$376K |
|
819
CALL
Trip.com Group
TCOM
$27.6B
| $9.69M | 0.01% |
354,800
+155,000
| +78% | +$4.06M |
|
820
CALL
Idexx Laboratories
IDXX
$43B
| $9.68M | 0.01% |
29,700
+21,100
| +245% | +$7.75M |
|
821
PUT
Invitation Homes
INVH
$17.6B
| $9.66M | 0.01% |
286,100
+22,000
| +8% | +$815K |
|
822
CALL
Annaly Capital Management
NLY
$16.8B
| $9.6M | 0.01% |
559,600
+478,350
| +589% | +$12.1M |
|
823
CALL
Invesco CurrencyShares Canadian Dollar Trust
FXC
$69.3M
| $9.58M | 0.01% |
135,200
-30,500
| -18% | -$2.28M |
|
824
CALL
Schwab US Broad Market ETF
SCHB
$42.9B
| $9.58M | 0.01% |
474,000
+21,000
| +5% | +$327K |
|
825
CALL
Range Resources
RRC
$9.17B
| $9.55M | 0.01% |
378,300
+147,700
| +64% | +$4.47M |
|
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.