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 | |
|---|---|---|---|---|---|---|
5101
PUT
Ardagh Metal Packaging
AMBP
$2.9B
| $97K | ﹤0.01% |
20,200
+1,600
| +9% | +$7.33K |
|
5102
PUT
Beam Global
BEEM
$23.1M
| $97K | ﹤0.01% |
5,600
+1,300
| +30% | +$19.5K |
|
5103
PUT
Citi Trends
CTRN
$565M
| $97K | ﹤0.01% |
3,700
-3,700
| -50% | -$87K |
|
5104
CALL
VanEck Energy Income ETF
EINC
$77.9M
| $97K | ﹤0.01% |
20,500
-92,300
| -82% | -$5.73M |
|
5105
EVgo
EVGO
$236M
| $97K | ﹤0.01% |
+21,821
| New | +$141K |
|
|
FENG
5106
Phoenix New Media
FENG
$17.8M
| $97K | ﹤0.01% |
36,536
-16,494
| -31% | -$61.9K |
|
|
HDSN
5107
PUT
Hudson Technologies
HDSN
$244M
| $97K | ﹤0.01% |
9,600
+7,900
| +465% | +$77.2K |
|
5108
PUT
Icon
ICLR
$12.8B
| $97K | ﹤0.01% |
500
+400
| +400% | +$79.3K |
|
5109
Immersion
IMMR
$246M
| $97K | ﹤0.01% |
13,814
-17,815
| -56% | -$115K |
|
5110
Photronics
PLAB
$1.74B
| $97K | ﹤0.01% |
5,766
+1,501
| +35% | +$25.6K |
|
|
SGMO
5111
CALL
DELISTED
SANGAMO THERAPEUTICS INC
SGMO
| $97K | ﹤0.01% |
31,000
+1,700
| +6% | +$6.6K |
|
5112
PUT
Sonoco
SON
$5.62B
| $97K | ﹤0.01% |
1,600
-200
| -11% | -$12K |
|
5113
CALL
Tootsie Roll Industries
TR
$2.96B
| $97K | ﹤0.01% |
2,589
-5,647
| -69% | -$206K |
|
|
BVH
5114
CALL
DELISTED
Bluegreen Vacations Holding Corporation
BVH
| $97K | ﹤0.01% |
3,900
+1,900
| +95% | +$39.1K |
|
|
CHS
5115
DELISTED
Chicos FAS, Inc.
CHS
| $97K | ﹤0.01% |
+19,877
| New | +$112K |
|
|
TUZ
5116
CALL
DELISTED
PIMCO 1-3 Year U.S. Treasury Index Exchange-Traded Fund
TUZ
| $97K | ﹤0.01% |
1,200
+700
| +140% | +$56.6K |
|
5117
CALL
Amalgamated Financial
AMAL
$1.48B
| $96K | ﹤0.01% |
4,200
+4,100
| +4,100% | +$99.3K |
|
5118
CALL
Associated Banc-Corp
ASB
$5.8B
| $96K | ﹤0.01% |
4,200
-1,800
| -30% | -$41.6K |
|
5119
PUT
A10 Networks
ATEN
$2.16B
| $96K | ﹤0.01% |
5,800
+1,000
| +21% | +$17.1K |
|
5120
PUT
BBVA Argentina
BBAR
$4.04B
| $96K | ﹤0.01% |
24,700
+9,200
| +59% | +$28.4K |
|
5121
PUT
Breakwave Dry Bulk Shipping ETF
BDRY
$29.4M
| $96K | ﹤0.01% |
10,500
+3,100
| +42% | +$26.4K |
|
5122
PUT
Ero Copper
ERO
$2.82B
| $96K | ﹤0.01% |
7,000
+6,800
| +3,400% | +$84.1K |
|
5123
CALL
Gladstone Investment Corp
GAIN
$646M
| $96K | ﹤0.01% |
7,500
+800
| +12% | +$10.6K |
|
5124
CALL
Ichor Holdings
ICHR
$2.61B
| $96K | ﹤0.01% |
3,600
-1,300
| -27% | -$34.7K |
|
5125
CALL
El Pollo Loco
LOCO
$502M
| $96K | ﹤0.01% |
9,700
+9,100
| +1,517% | +$94.8K |
|
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.