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 | |
|---|---|---|---|---|---|---|
3351
PUT
WillScot Mobile Mini Holdings
WSC
$4.33B
| $556K | ﹤0.01% |
13,800
+8,900
| +182% | +$347K |
|
|
TEN
3352
CALL
Tsakos Energy Navigation Ltd
TEN
$1.18B
| $555K | ﹤0.01% |
36,400
+26,100
| +253% | +$364K |
|
3353
Array Technologies
ARRY
$754M
| $554K | ﹤0.01% |
+33,433
| New | +$578K |
|
|
VNET
3354
CALL
VNET Group
VNET
$1.8B
| $554K | ﹤0.01% |
100,800
-136,400
| -58% | -$718K |
|
|
GOGL
3355
CALL
DELISTED
Golden Ocean Group
GOGL
| $552K | ﹤0.01% |
73,900
+3,100
| +4% | +$31.1K |
|
3356
MBIA
MBI
$272M
| $551K | ﹤0.01% |
59,939
-4,865
| -8% | -$57.7K |
|
3357
Watsco Inc
WSO
$12.8B
| $551K | ﹤0.01% |
+2,141
| New | +$580K |
|
|
GRIN
3358
DELISTED
Grindrod Shipping Holdings Ltd. Ordinary Shares
GRIN
| $551K | ﹤0.01% |
+23,065
| New | +$466K |
|
3359
CALL
Aehr Test Systems
AEHR
$2.13B
| $549K | ﹤0.01% |
39,000
+32,200
| +474% | +$433K |
|
|
CMA
3360
DELISTED
Comerica
CMA
| $549K | ﹤0.01% |
7,735
-636
| -8% | -$50.1K |
|
|
UHT
3361
CALL
Universal Health Realty Income Trust
UHT
$633M
| $548K | ﹤0.01% |
12,700
+9,500
| +297% | +$485K |
|
|
TCDA
3362
DELISTED
Tricida, Inc. Common Stock
TCDA
| $548K | ﹤0.01% |
52,350
+29,231
| +126% | +$320K |
|
|
CMRC
3363
CALL
Commerce.com Inc Series 1
CMRC
$263M
| $547K | ﹤0.01% |
37,000
+8,600
| +30% | +$148K |
|
3364
PUT
Century Communities
CCS
$1.99B
| $547K | ﹤0.01% |
12,800
+6,700
| +110% | +$324K |
|
3365
CALL
Choice Hotels
CHH
$5.26B
| $547K | ﹤0.01% |
5,000
+3,000
| +150% | +$344K |
|
3366
PUT
Dover
DOV
$26.6B
| $547K | ﹤0.01% |
4,700
+3,600
| +327% | +$459K |
|
3367
SSR Mining
SSRM
$5.04B
| $547K | ﹤0.01% |
37,188
+30,342
| +443% | +$457K |
|
3368
Electronic Arts
EA
$52.4B
| $546K | ﹤0.01% |
+4,721
| New | +$597K |
|
3369
HSBC
HSBC
$353B
| $546K | ﹤0.01% |
20,977
-68,145
| -76% | -$2.12M |
|
3370
BWX Technologies
BWXT
$14.9B
| $545K | ﹤0.01% |
10,821
+3,660
| +51% | +$198K |
|
3371
Direxion Daily Energy Bull 2X ETF
ERX
$236M
| $545K | ﹤0.01% |
11,808
-71,968
| -86% | -$3.71M |
|
|
KNDI
3372
CALL
Kandi Technologies Group
KNDI
$62.7M
| $545K | ﹤0.01% |
258,700
-19,000
| -7% | -$44.4K |
|
3373
PUT
EVgo
EVGO
$223M
| $544K | ﹤0.01% |
68,800
+7,400
| +12% | +$64.5K |
|
3374
uniQure
QURE
$2.69B
| $544K | ﹤0.01% |
29,037
-161,804
| -85% | -$3.4M |
|
3375
PUT
Royal Gold
RGLD
$16.3B
| $544K | ﹤0.01% |
5,800
-1,200
| -17% | -$119K |
|
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.