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 | |
|---|---|---|---|---|---|---|
3526
PUT
Harrow
HROW
$1.47B
| $361K | ﹤0.01% |
24,500
-3,700
| -13% | -$44.2K |
|
3527
CALL
Cullen/Frost Bankers
CFR
$10.5B
| $360K | ﹤0.01% |
2,700
-21,100
| -89% | -$3M |
|
3528
PUT
Essex Property Trust
ESS
$18.9B
| $360K | ﹤0.01% |
1,700
+1,100
| +183% | +$240K |
|
3529
CALL
Microvast
MVST
$256M
| $360K | ﹤0.01% |
235,700
-45,800
| -16% | -$93.4K |
|
|
PCH
3530
PUT
DELISTED
PotlatchDeltic
PCH
| $360K | ﹤0.01% |
8,200
+8,100
| +8,100% | +$366K |
|
3531
CALL
TechnipFMC
FTI
$28.9B
| $359K | ﹤0.01% |
29,500
-136,300
| -82% | -$1.53M |
|
3532
CALL
Webster Financial
WBS
$12.5B
| $359K | ﹤0.01% |
7,600
-25,700
| -77% | -$1.29M |
|
3533
PUT
Quanterix
QTRX
$164M
| $358K | ﹤0.01% |
25,900
+21,300
| +463% | +$245K |
|
|
TCDA
3534
PUT
DELISTED
Tricida, Inc. Common Stock
TCDA
| $358K | ﹤0.01% |
74,500
-581,300
| -89% | -$1.73M |
|
3535
CALL
Everspin Technologies
MRAM
$328M
| $357K | ﹤0.01% |
64,300
+58,800
| +1,069% | +$346K |
|
3536
CALL
Ring Energy
REI
$287M
| $357K | ﹤0.01% |
145,300
-81,100
| -36% | -$223K |
|
3537
TPG
TPG
$7.02B
| $357K | ﹤0.01% |
+12,860
| New | +$405K |
|
3538
Denison Mines
DNN
$2.49B
| $356K | ﹤0.01% |
310,023
-62,541
| -17% | -$74.1K |
|
|
RC
3539
CALL
Ready Capital
RC
$261M
| $356K | ﹤0.01% |
32,000
-25,400
| -44% | -$306K |
|
|
3540
CALL
TPG
TPG
$7.02B
| $356K | ﹤0.01% |
12,800
-140,300
| -92% | -$4.42M |
|
|
RADI
3541
PUT
DELISTED
Radius Global Infrastructure, Inc. Class A Common Stock
RADI
| $356K | ﹤0.01% |
30,200
+23,000
| +319% | +$238K |
|
3542
Asana
ASAN
$1.89B
| $355K | ﹤0.01% |
+25,847
| New | +$469K |
|
3543
PUT
Calix
CALX
$2.34B
| $355K | ﹤0.01% |
5,200
-17,000
| -77% | -$1.14M |
|
3544
Unum
UNM
$14B
| $355K | ﹤0.01% |
8,654
-3,174
| -27% | -$133K |
|
3545
PUT
Agree Realty
ADC
$9.74B
| $354K | ﹤0.01% |
5,000
-400
| -7% | -$27.5K |
|
|
GOLD
3546
CALL
Gold.com Inc
GOLD
$1.18B
| $354K | ﹤0.01% |
10,200
+3,200
| +46% | +$101K |
|
3547
PUT
Brown-Forman Class B
BF.B
$13.3B
| $354K | ﹤0.01% |
5,400
+5,000
| +1,250% | +$339K |
|
3548
PUT
Coeur Mining
CDE
$15.4B
| $354K | ﹤0.01% |
105,600
+42,500
| +67% | +$151K |
|
3549
Eve Holding
EVEX
$853M
| $354K | ﹤0.01% |
49,174
-15,119
| -24% | -$132K |
|
3550
PUT
Progress Software
PRGS
$1.66B
| $353K | ﹤0.01% |
+7,000
| New | +$349K |
|
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.