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 | |
|---|---|---|---|---|---|---|
|
SWCH
2251
CALL
DELISTED
Switch, Inc. Class A Common Stock
SWCH
| $1.48M | ﹤0.01% |
44,000
-225,800
| -84% | -$7.65M |
|
|
CSSE
2252
PUT
DELISTED
Chicken Soup for the Soul Entertainment, Inc. Class A Common Stock
CSSE
| $1.48M | ﹤0.01% |
214,900
+178,100
| +484% | +$1.65M |
|
2253
CALL
Chord Energy
CHRD
$7.6B
| $1.48M | ﹤0.01% |
10,800
+9,700
| +882% | +$1.24M |
|
|
ACCD
2254
PUT
DELISTED
Accolade Inc
ACCD
| $1.48M | ﹤0.01% |
129,400
+100,700
| +351% | +$1.1M |
|
2255
CALL
Charles River Laboratories
CRL
$11B
| $1.48M | ﹤0.01% |
7,500
-14,700
| -66% | -$3.17M |
|
2256
Direxion Daily Small Cap Bear 3x ETF
TZA
$241M
| $1.47M | ﹤0.01% |
+3,205
| New | +$1.18M |
|
|
GAP
2257
PUT
The Gap Inc
GAP
$6.95B
| $1.47M | ﹤0.01% |
179,300
-222,700
| -55% | -$2.09M |
|
|
ABB
2258
CALL
DELISTED
ABB Ltd
ABB
| $1.47M | ﹤0.01% |
57,400
+19,700
| +52% | +$553K |
|
2259
CALL
International Flavors & Fragrances
IFF
$19.8B
| $1.47M | ﹤0.01% |
16,200
+6,200
| +62% | +$710K |
|
2260
PUT
TherapeuticsMD
TXMD
$24.3M
| $1.47M | ﹤0.01% |
221,000
-2,400
| -1% | -$19.4K |
|
2261
CALL
Jazz Pharmaceuticals
JAZZ
$16B
| $1.47M | ﹤0.01% |
11,000
+6,900
| +168% | +$1.05M |
|
2262
PUT
Invesco DB Commodity Index Tracking Fund
DBC
$1.69B
| $1.46M | ﹤0.01% |
61,200
+700
| +1% | +$17.8K |
|
2263
PUT
JFrog
FROG
$10B
| $1.46M | ﹤0.01% |
66,200
-18,400
| -22% | -$410K |
|
2264
United Rentals
URI
$69.8B
| $1.46M | ﹤0.01% |
+5,419
| New | +$1.58M |
|
2265
ARK Genomic Revolution ETF
ARKG
$1.57B
| $1.46M | ﹤0.01% |
44,366
+41,266
| +1,331% | +$1.51M |
|
2266
CALL
Hims & Hers Health
HIMS
$6.8B
| $1.46M | ﹤0.01% |
261,200
+12,600
| +5% | +$75.9K |
|
2267
PUT
AvalonBay Communities
AVB
$27.1B
| $1.46M | ﹤0.01% |
7,900
-7,000
| -47% | -$1.41M |
|
|
CGC
2268
PUT
Canopy Growth
CGC
$386M
| $1.45M | ﹤0.01% |
53,280
-21,580
| -29% | -$666K |
|
2269
Barclays
BCS
$96.5B
| $1.45M | ﹤0.01% |
226,743
-6,214
| -3% | -$47.9K |
|
2270
PUT
Warrior Met Coal
HCC
$4.19B
| $1.45M | ﹤0.01% |
51,000
+41,700
| +448% | +$1.28M |
|
2271
PUT
TAL Education Group
TAL
$5.75B
| $1.45M | ﹤0.01% |
293,500
+160,100
| +120% | +$794K |
|
|
SBNY
2272
PUT
DELISTED
Signature Bank
SBNY
| $1.45M | ﹤0.01% |
9,600
-8,800
| -48% | -$1.6M |
|
|
TIGR
2273
CALL
UP Fintech Holding
TIGR
$867M
| $1.45M | ﹤0.01% |
439,700
+64,400
| +17% | +$246K |
|
|
TRQ
2274
PUT
DELISTED
Turquoise Hill Resources Ltd
TRQ
| $1.45M | ﹤0.01% |
48,900
+34,200
| +233% | +$931K |
|
2275
CALL
Freshworks
FRSH
$2.96B
| $1.44M | ﹤0.01% |
111,400
+30,100
| +37% | +$426K |
|
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.