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 |
Amazon
AMZN
|
+$170M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$71.3M |
| 3 |
AT&T
T
|
+$44.2M |
| 4 |
Meta Platforms (Facebook)
META
|
+$37.1M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$34.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Microsoft
MSFT
|
+$94.3M |
| 2 |
JPMorgan Chase
JPM
|
+$68.2M |
| 3 |
Citigroup
C
|
+$62.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$50.9M |
| 5 |
SPDR Gold Trust
GLD
|
+$46.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.38% |
| 2 | Technology | 0.35% |
| 3 | Communication Services | 0.24% |
| 4 | Healthcare | 0.2% |
| 5 | Consumer Staples | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
LTHM
1251
CALL
DELISTED
Livent Corporation
LTHM
| $4.64M | 0.01% |
233,800
-200,900
| -46% | -$5.5M |
|
|
JWN
1252
PUT
DELISTED
Nordstrom
JWN
| $4.64M | 0.01% |
287,600
+12,300
| +4% | +$235K |
|
1253
PUT
Matador Resources
MTDR
$6.38B
| $4.64M | 0.01% |
81,000
+6,200
| +8% | +$391K |
|
1254
CALL
Alcon
ALC
$33.3B
| $4.63M | 0.01% |
67,600
-91,900
| -58% | -$5.86M |
|
1255
PUT
STMicroelectronics
STM
$47.2B
| $4.63M | 0.01% |
130,200
+61,300
| +89% | +$2.16M |
|
1256
PUT
Synopsys
SNPS
$71.9B
| $4.63M | 0.01% |
14,500
-3,600
| -20% | -$1.13M |
|
1257
CF Industries
CF
$19.1B
| $4.63M | 0.01% |
54,320
-20,241
| -27% | -$2.06M |
|
1258
CALL
Vanguard Emerging Markets Government Bond ETF
VWOB
$6.15B
| $4.62M | 0.01% |
44,500
+7,500
| +20% | +$448K |
|
1259
Invesco CurrencyShares Japanese Yen Trust
FXY
$423M
| $4.61M | 0.01% |
64,873
-22,197
| -25% | -$1.47M |
|
1260
PUT
Bloom Energy
BE
$57.1B
| $4.6M | 0.01% |
240,700
+139,200
| +137% | +$2.73M |
|
1261
CALL
Calumet Specialty Products
CLMT
$3.65B
| $4.6M | 0.01% |
272,600
+58,000
| +27% | +$935K |
|
|
LNW
1262
CALL
DELISTED
Light & Wonder
LNW
| $4.6M | 0.01% |
78,500
-70,600
| -47% | -$4.04M |
|
1263
PUT
Stellantis
STLA
$16.5B
| $4.59M | 0.01% |
323,800
-11,500
| -3% | -$160K |
|
1264
Direxion Daily Gold Miners Index Bull 2X ETF
NUGT
$882M
| $4.59M | 0.01% |
133,072
+132,337
| +18,005% | +$4.01M |
|
1265
CALL
Corteva
CTVA
$59.3B
| $4.57M | 0.01% |
77,800
-25,300
| -25% | -$1.6M |
|
1266
PUT
Consolidated Edison
ED
$41.7B
| $4.57M | 0.01% |
47,900
-62,300
| -57% | -$5.67M |
|
1267
iShares US Real Estate ETF
IYR
$4.59B
| $4.57M | 0.01% |
+54,226
| New | +$4.55M |
|
1268
PUT
NovoCure
NVCR
$2.12B
| $4.55M | ﹤0.01% |
62,000
+25,500
| +70% | +$1.92M |
|
|
VISN
1269
CALL
Vistance Networks Inc
VISN
$2.69B
| $4.54M | ﹤0.01% |
618,400
+217,200
| +54% | +$2.1M |
|
1270
Valmont Industries
VMI
$9.42B
| $4.54M | ﹤0.01% |
13,734
+7,555
| +122% | +$2.4M |
|
1271
PUT
Global E Online
GLBE
$6.05B
| $4.54M | ﹤0.01% |
220,000
+80,300
| +57% | +$1.82M |
|
|
SPWR
1272
CALL
DELISTED
SunPower Corporation Common Stock
SPWR
| $4.54M | ﹤0.01% |
251,800
-184,500
| -42% | -$3.78M |
|
|
JKS
1273
CALL
JinkoSolar
JKS
$791M
| $4.53M | ﹤0.01% |
110,900
+33,900
| +44% | +$1.63M |
|
1274
CALL
Freshpet
FRPT
$2.83B
| $4.53M | ﹤0.01% |
85,900
+55,600
| +183% | +$3.31M |
|
1275
PUT
Allstate
ALL
$66.8B
| $4.53M | ﹤0.01% |
33,400
+1,300
| +4% | +$170K |
|
Similar funds
Simplex Trading's Q4 2022 Portfolio in Review
As of Q4 2022, Simplex Trading held 11,206 positions worth $91.9B, up 3.9% from $88.5B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
Simplex Trading's Q4 2022 filing shows 1,219 new, 3,365 increased, 4,370 reduced and 1,942 closed positions. Its largest new stake was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M. The largest sale was Microsoft, an estimated $94.3M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.38% of assets, up from 0.3% a quarter earlier, followed by Technology and Communication Services.
- Simplex Trading's largest Q4 2022 buy was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M.
- Simplex Trading added most to Amazon in Q4 2022, an estimated $170M increase.
- Simplex Trading's biggest Q4 2022 reduction was Microsoft, cutting an estimated $94.3M.
- Simplex Trading fully exited JPMorgan Chase in Q4 2022, selling an estimated $68.2M.
- Simplex Trading's ten largest holdings make up 34% of its $91.9B portfolio in Q4 2022.
- Simplex Trading opened 1,219 new positions and closed 1,942 in Q4 2022.
- Simplex Trading's portfolio value rose 3.9% quarter-over-quarter to $91.9B.
Based on Simplex Trading's 13F filing for Q4 2022, filed 2 Feb 2023.