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 | |
|---|---|---|---|---|---|---|
4201
PUT
SS&C Technologies
SSNC
$18.9B
| $203K | ﹤0.01% |
3,900
-107,000
| -96% | -$5.42M |
|
4202
CALL
Weatherford International
WFRD
$5.9B
| $203K | ﹤0.01% |
4,000
-20,500
| -84% | -$845K |
|
|
SRC
4203
PUT
DELISTED
SPIRIT REALTY CAPITAL, INC.
SRC
| $203K | ﹤0.01% |
5,100
-100
| -2% | -$3.9K |
|
4204
CALL
Cooper-Standard Automotive
CPS
$517M
| $202K | ﹤0.01% |
22,300
+2,200
| +11% | +$15.6K |
|
4205
PUT
Golar LNG
GLNG
$4.82B
| $202K | ﹤0.01% |
8,900
+2,800
| +46% | +$70.1K |
|
|
HIVE
4206
HIVE Digital Technologies
HIVE
$679M
| $202K | ﹤0.01% |
140,349
+104,079
| +287% | +$266K |
|
4207
PUT
NMI Holdings
NMIH
$3.37B
| $202K | ﹤0.01% |
9,700
+6,700
| +223% | +$140K |
|
4208
PUT
Regis Corp
RGS
$68.4M
| $202K | ﹤0.01% |
8,310
+1,010
| +14% | +$24K |
|
|
UCTT
4209
CALL
Ultra Clean Holdings
UCTT
$3.12B
| $202K | ﹤0.01% |
6,100
+2,900
| +91% | +$92.5K |
|
|
BPMC
4210
PUT
DELISTED
Blueprint Medicines
BPMC
| $201K | ﹤0.01% |
4,600
+2,500
| +119% | +$120K |
|
4211
CALL
Globant
GLOB
$1.65B
| $201K | ﹤0.01% |
1,200
+500
| +71% | +$88.5K |
|
|
JMIA
4212
PUT
Jumia Technologies
JMIA
$708M
| $201K | ﹤0.01% |
62,800
-36,800
| -37% | -$166K |
|
4213
Lindsay Corp
LNN
$1.14B
| $201K | ﹤0.01% |
+1,239
| New | +$204K |
|
4214
MasTec
MTZ
$22.7B
| $201K | ﹤0.01% |
+2,357
| New | +$193K |
|
|
EBIX
4215
PUT
DELISTED
Ebix Inc
EBIX
| $201K | ﹤0.01% |
10,100
-75,400
| -88% | -$1.46M |
|
|
AMWD
4216
PUT
DELISTED
American Woodmark
AMWD
| $200K | ﹤0.01% |
4,100
+2,300
| +128% | +$114K |
|
4217
PUT
Bionano Genomics
BNGO
$12.5M
| $200K | ﹤0.01% |
229
+122
| +114% | +$154K |
|
|
SLAI
4218
CALL
DELISTED
SOLAI Ltd ADS
SLAI
| $200K | ﹤0.01% |
18,157
+16,321
| +889% | +$253K |
|
4219
PUT
Century Communities
CCS
$1.98B
| $200K | ﹤0.01% |
4,000
-8,800
| -69% | -$416K |
|
4220
PUT
Crane NXT
CXT
$2.99B
| $200K | ﹤0.01% |
5,758
+1,439
| +33% | +$50.2K |
|
4221
Elastic
ESTC
$6.7B
| $200K | ﹤0.01% |
3,890
-3,031
| -44% | -$182K |
|
4222
CALL
Glaukos
GKOS
$9.49B
| $200K | ﹤0.01% |
4,600
-10,100
| -69% | -$498K |
|
|
HUT
4223
PUT
Hut 8
HUT
$9.93B
| $200K | ﹤0.01% |
47,120
+7,480
| +19% | +$56.4K |
|
4224
PUT
Old Republic International
ORI
$10.9B
| $200K | ﹤0.01% |
8,300
-800
| -9% | -$18.8K |
|
4225
Paymentus
PAY
$4.62B
| $200K | ﹤0.01% |
25,029
+6,657
| +36% | +$65.3K |
|
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.