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 | |
|---|---|---|---|---|---|---|
826
PUT
Progressive
PGR
$124B
| $9.55M | 0.01% |
82,200
+17,300
| +27% | +$2.08M |
|
827
PUT
Agnico Eagle Mines
AEM
$72.3B
| $9.5M | 0.01% |
225,000
+20,700
| +10% | +$887K |
|
828
PUT
AMC Entertainment Holdings
AMC
$2.06B
| $9.5M | 0.01% |
214,460
-31,580
| -13% | -$4.31M |
|
829
PUT
Gartner
IT
$9.38B
| $9.46M | 0.01% |
34,200
+10,200
| +43% | +$2.86M |
|
830
PUT
Annaly Capital Management
NLY
$16.8B
| $9.46M | 0.01% |
551,300
+460,575
| +508% | +$11.6M |
|
831
PUT
Consolidated Edison
ED
$41.7B
| $9.45M | 0.01% |
110,200
+20,900
| +23% | +$2.02M |
|
832
PUT
Unilever
UL
$131B
| $9.38M | 0.01% |
190,133
+25,689
| +16% | +$1.34M |
|
833
CALL
American International
AIG
$41.8B
| $9.36M | 0.01% |
197,100
+132,300
| +204% | +$6.95M |
|
834
PUT
Waste Management
WM
$95.9B
| $9.34M | 0.01% |
58,300
+1,000
| +2% | +$165K |
|
835
CALL
Prudential Financial
PRU
$41.6B
| $9.32M | 0.01% |
108,700
+25,800
| +31% | +$2.48M |
|
836
CALL
Flex
FLEX
$43.3B
| $9.3M | 0.01% |
740,864
+531,463
| +254% | +$6.79M |
|
|
837
CALL
Unilever
UL
$131B
| $9.29M | 0.01% |
188,444
+59,200
| +46% | +$3.09M |
|
838
PUT
Teva Pharmaceuticals
TEVA
$35.9B
| $9.28M | 0.01% |
1,150,000
-153,800
| -12% | -$1.36M |
|
839
CALL
Alcon
ALC
$33.3B
| $9.28M | 0.01% |
159,500
+65,000
| +69% | +$4.51M |
|
840
CALL
Vodafone
VOD
$35B
| $9.27M | 0.01% |
818,300
+354,400
| +76% | +$4.95M |
|
841
CALL
Star Bulk Carriers
SBLK
$3.16B
| $9.24M | 0.01% |
528,800
+313,700
| +146% | +$7.16M |
|
842
CALL
Constellation Energy
CEG
$97.8B
| $9.19M | 0.01% |
110,500
+101,300
| +1,101% | +$7.47M |
|
|
NVO
843
CALL
Novo Nordisk
NVO
$217B
| $9.16M | 0.01% |
184,000
+98,400
| +115% | +$5.27M |
|
844
CALL
Dropbox
DBX
$6.82B
| $9.13M | 0.01% |
440,600
+27,700
| +7% | +$620K |
|
845
Micron Technology
MU
$1.03T
| $9.07M | 0.01% |
+181,130
| New | +$10.5M |
|
846
Intuit
INTU
$80.7B
| $9.02M | 0.01% |
23,295
+18,859
| +425% | +$8.15M |
|
847
CALL
ProShares Ultra S&P500
SSO
$7.8B
| $9.01M | 0.01% |
567,000
-162,600
| -22% | -$4.02M |
|
848
CALL
Wheaton Precious Metals
WPM
$50.5B
| $9.01M | 0.01% |
278,300
+116,200
| +72% | +$3.82M |
|
849
PUT
KKR & Co
KKR
$88.7B
| $8.98M | 0.01% |
208,900
+38,300
| +22% | +$1.94M |
|
850
CALL
Cal-Maine
CALM
$4.29B
| $8.96M | 0.01% |
161,200
-18,000
| -10% | -$984K |
|
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.