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 | |
|---|---|---|---|---|---|---|
|
CSSE
3151
PUT
DELISTED
Chicken Soup for the Soul Entertainment, Inc. Class A Common Stock
CSSE
| $500K | ﹤0.01% |
97,800
-117,100
| -54% | -$744K |
|
|
ARI
3152
CALL
Apollo Commercial Real Estate
ARI
$876M
| $499K | ﹤0.01% |
46,400
+1,300
| +3% | +$14.2K |
|
3153
Perrigo
PRGO
$1.4B
| $499K | ﹤0.01% |
14,664
-1,638
| -10% | -$57.7K |
|
3154
CALL
Terex
TEX
$7.89B
| $499K | ﹤0.01% |
11,700
-7,100
| -38% | -$286K |
|
3155
CALL
Playboy Inc
PLBY
$143M
| $498K | ﹤0.01% |
181,300
-12,900
| -7% | -$46.1K |
|
3156
CALL
McCormick & Company Non-Voting
MKC
$13.6B
| $497K | ﹤0.01% |
6,000
-3,800
| -39% | -$306K |
|
3157
CALL
Rambus
RMBS
$10.4B
| $497K | ﹤0.01% |
13,900
-22,900
| -62% | -$774K |
|
3158
CALL
Dycom Industries
DY
$12.7B
| $496K | ﹤0.01% |
5,300
+3,500
| +194% | +$352K |
|
3159
CALL
FLEX LNG
FLNG
$1.65B
| $496K | ﹤0.01% |
15,200
+12,100
| +390% | +$405K |
|
3160
CALL
Valley National Bancorp
VLY
$7.94B
| $496K | ﹤0.01% |
43,900
+10,700
| +32% | +$126K |
|
|
DICE
3161
PUT
DELISTED
DICE Therapeutics, Inc. Common Stock
DICE
| $496K | ﹤0.01% |
15,900
+14,200
| +835% | +$463K |
|
|
ME
3162
PUT
DELISTED
23andMe Holding Co
ME
| $494K | ﹤0.01% |
11,445
-1,985
| -15% | -$116K |
|
3163
PUT
Transmedics
TMDX
$2.57B
| $493K | ﹤0.01% |
8,000
-7,100
| -47% | -$377K |
|
3164
CALL
ONE Gas
OGS
$5.02B
| $492K | ﹤0.01% |
6,500
+6,200
| +2,067% | +$478K |
|
3165
Ardmore Shipping
ASC
$669M
| $491K | ﹤0.01% |
34,081
+3,156
| +10% | +$41.9K |
|
3166
PUT
Cooper-Standard Automotive
CPS
$508M
| $491K | ﹤0.01% |
54,300
-2,900
| -5% | -$20.5K |
|
3167
PUT
MannKind Corp
MNKD
$1.22B
| $491K | ﹤0.01% |
93,200
-72,800
| -44% | -$298K |
|
3168
CALL
Future Fuel
FF
$203M
| $490K | ﹤0.01% |
60,300
-82,200
| -58% | -$621K |
|
3169
CALL
Alignment Healthcare
ALHC
$3.86B
| $489K | ﹤0.01% |
+41,600
| New | +$506K |
|
3170
CALL
Rogers Corp
ROG
$2.31B
| $489K | ﹤0.01% |
4,100
-400
| -9% | -$62.1K |
|
3171
CALL
Bakkt Inc
BKKT
$338M
| $488K | ﹤0.01% |
16,432
-3,224
| -16% | -$150K |
|
3172
PUT
RUM Group Inc
RUM
$1.67B
| $488K | ﹤0.01% |
82,100
-62,800
| -43% | -$602K |
|
3173
PUT
Cognyte Software
CGNT
$642M
| $487K | ﹤0.01% |
156,700
+108,600
| +226% | +$319K |
|
3174
Fluence Energy
FLNC
$1.79B
| $487K | ﹤0.01% |
28,444
+9,772
| +52% | +$154K |
|
3175
CALL
OGE Energy
OGE
$10.2B
| $486K | ﹤0.01% |
12,300
+600
| +5% | +$22.8K |
|
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.