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 | |
|---|---|---|---|---|---|---|
5176
Designer Brands
DBI
$314M
| $92K | ﹤0.01% |
9,422
+6,343
| +206% | +$85.5K |
|
5177
PUT
Globalstar
GSAT
$10.3B
| $92K | ﹤0.01% |
4,627
-973
| -17% | -$25.6K |
|
5178
PUT
Hain Celestial
HAIN
$44.4M
| $92K | ﹤0.01% |
5,700
-100
| -2% | -$1.78K |
|
5179
CALL
Global X MSCI Norway ETF
NORW
$87.3M
| $92K | ﹤0.01% |
4,800
-12,500
| -72% | -$312K |
|
|
PROF
5180
CALL
Profound Medical
PROF
$263M
| $92K | ﹤0.01% |
8,500
-6,400
| -43% | -$34.9K |
|
5181
Senseonics Holdings Inc
SENS
$265M
| $92K | ﹤0.01% |
4,507
+4,191
| +1,326% | +$96.7K |
|
5182
PUT
AquaBounty Technologies
AQB
$4.68M
| $91K | ﹤0.01% |
6,010
-4,930
| -45% | -$67.1K |
|
5183
CALL
Caleres
CAL
$437M
| $91K | ﹤0.01% |
4,100
-36,000
| -90% | -$884K |
|
5184
PUT
Ceco Environmental
CECO
$3.83B
| $91K | ﹤0.01% |
7,800
+3,100
| +66% | +$35.1K |
|
5185
CALL
Conduent
CNDT
$245M
| $91K | ﹤0.01% |
22,700
-26,500
| -54% | -$102K |
|
|
MTA
5186
Metalla Royalty & Streaming
MTA
$712M
| $91K | ﹤0.01% |
18,681
+9,943
| +114% | +$47.7K |
|
5187
iShares MSCI Global Metals & Mining Producers ETF
PICK
$2.24B
| $91K | ﹤0.01% |
2,234
+325
| +17% | +$12.7K |
|
5188
PolyPid
PYPD
$83.8M
| $91K | ﹤0.01% |
4,358
+1,527
| +54% | +$39.5K |
|
5189
PUT
Stem
STEM
$47.5M
| $91K | ﹤0.01% |
510
-3,825
| -88% | -$919K |
|
|
STKL
5190
CALL
DELISTED
SunOpta
STKL
| $91K | ﹤0.01% |
10,800
-22,100
| -67% | -$209K |
|
5191
PUT
Travel + Leisure Co
TNL
$4.61B
| $91K | ﹤0.01% |
2,500
+100
| +4% | +$3.75K |
|
5192
PUT
Veeco
VECO
$2.95B
| $91K | ﹤0.01% |
4,900
-10,100
| -67% | -$190K |
|
|
MRNS
5193
PUT
DELISTED
Marinus Pharmaceuticals, Inc
MRNS
| $91K | ﹤0.01% |
22,900
+10,400
| +83% | +$51.1K |
|
5194
CALL
B2Gold
BTG
$5.13B
| $90K | ﹤0.01% |
25,300
-7,900
| -24% | -$26.3K |
|
5195
PUT
Traeger
COOK
$171M
| $90K | ﹤0.01% |
644
-188
| -23% | -$31.4K |
|
5196
CALL
Kopin
KOPN
$663M
| $90K | ﹤0.01% |
72,600
-21,700
| -23% | -$26.8K |
|
5197
PUT
Lesaka Technologies
LSAK
$399M
| $90K | ﹤0.01% |
19,900
| – | – |
|
|
NNDM
5198
PUT
Nano Dimension
NNDM
$324M
| $90K | ﹤0.01% |
39,500
-692,900
| -95% | -$1.69M |
|
5199
Omeros
OMER
$863M
| $90K | ﹤0.01% |
40,148
+10,276
| +34% | +$28.3K |
|
|
OPTN
5200
CALL
DELISTED
OptiNose
OPTN
| $90K | ﹤0.01% |
3,267
-93
| -3% | -$3.53K |
|
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.