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 | |
|---|---|---|---|---|---|---|
|
CSSE
2826
CALL
DELISTED
Chicken Soup for the Soul Entertainment, Inc. Class A Common Stock
CSSE
| $862K | ﹤0.01% |
125,300
+94,000
| +300% | +$870K |
|
2827
CALL
Clean Energy Fuels
CLNE
$425M
| $861K | ﹤0.01% |
161,400
+72,000
| +81% | +$451K |
|
2828
PUT
Amplify Junior Silver Miners ETF
SILJ
$3.23B
| $861K | ﹤0.01% |
100,000
-72,900
| -42% | -$673K |
|
2829
CALL
Future Fuel
FF
$205M
| $860K | ﹤0.01% |
142,500
+131,900
| +1,244% | +$911K |
|
2830
CALL
UDR
UDR
$12.9B
| $859K | ﹤0.01% |
20,600
-14,300
| -41% | -$656K |
|
2831
CALL
Newmark Group
NMRK
$2.88B
| $858K | ﹤0.01% |
106,500
+12,000
| +13% | +$124K |
|
2832
American Eagle Outfitters
AEO
$3B
| $857K | ﹤0.01% |
88,180
-22,807
| -21% | -$265K |
|
2833
PUT
LoveSac
LOVE
$249M
| $857K | ﹤0.01% |
42,100
-1,400
| -3% | -$43K |
|
2834
CALL
NNN REIT
NNN
$9.38B
| $856K | ﹤0.01% |
21,500
-2,400
| -10% | -$108K |
|
2835
Blue Owl Capital
OWL
$6.6B
| $856K | ﹤0.01% |
92,787
-224,957
| -71% | -$2.5M |
|
2836
LSB Industries
LXU
$829M
| $855K | ﹤0.01% |
+60,039
| New | +$850K |
|
|
EVBG
2837
CALL
DELISTED
Everbridge, Inc. Common Stock
EVBG
| $855K | ﹤0.01% |
27,700
+13,200
| +91% | +$433K |
|
|
RAM
2838
DELISTED
Aries I Acquisition Corporation Class A Ordinary Share
RAM
| $853K | ﹤0.01% |
+83,146
| New | +$859K |
|
2839
CALL
Murphy USA
MUSA
$11.2B
| $852K | ﹤0.01% |
3,100
+200
| +7% | +$55.9K |
|
2840
PUT
Macerich
MAC
$7.49B
| $851K | ﹤0.01% |
107,300
-24,400
| -19% | -$237K |
|
|
GES
2841
PUT
DELISTED
Guess Inc
GES
| $850K | ﹤0.01% |
58,000
-4,500
| -7% | -$80.4K |
|
2842
Hormel Foods
HRL
$14.2B
| $850K | ﹤0.01% |
+18,724
| New | +$904K |
|
|
SAFE
2843
PUT
DELISTED
Safehold Inc.
SAFE
| $849K | ﹤0.01% |
32,100
-21,200
| -40% | -$826K |
|
2844
CALL
Henry Schein
HSIC
$9.69B
| $848K | ﹤0.01% |
12,900
+11,600
| +892% | +$862K |
|
2845
CALL
Invesco CurrencyShares British Pound Sterling Trust
FXB
$76.7M
| $847K | ﹤0.01% |
7,900
+6,500
| +464% | +$735K |
|
2846
CALL
Design Therapeutics
DSGN
$733M
| $846K | ﹤0.01% |
+50,600
| New | +$1.01M |
|
|
HOLX
2847
PUT
DELISTED
Hologic
HOLX
| $845K | ﹤0.01% |
13,100
-52,800
| -80% | -$3.66M |
|
2848
CALL
MarketAxess Holdings
MKTX
$4.3B
| $845K | ﹤0.01% |
3,800
-1,700
| -31% | -$436K |
|
|
VIVO
2849
CALL
DELISTED
Meridian Bioscience Inc
VIVO
| $845K | ﹤0.01% |
26,800
+25,200
| +1,575% | +$816K |
|
2850
CALL
Xcel Energy
XEL
$50.9B
| $844K | ﹤0.01% |
13,200
-36,400
| -73% | -$2.65M |
|
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.