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 | |
|---|---|---|---|---|---|---|
|
OBE
5351
PUT
Obsidian Energy
OBE
$678M
| $79K | ﹤0.01% |
12,000
-31,600
| -72% | -$245K |
|
5352
iShares MSCI Thailand ETF
THD
$364M
| $79K | ﹤0.01% |
1,054
+1,036
| +5,756% | +$72.2K |
|
|
TPH
5353
CALL
DELISTED
Tri Pointe Homes
TPH
| $79K | ﹤0.01% |
4,300
-9,100
| -68% | -$158K |
|
5354
PUT
Telus
TU
$16.8B
| $79K | ﹤0.01% |
4,100
+1,800
| +78% | +$37.2K |
|
5355
PUT
Clear Secure
YOU
$5.65B
| $79K | ﹤0.01% |
2,900
+1,000
| +53% | +$27.5K |
|
5356
CALL
Ziff Davis
ZD
$1.94B
| $79K | ﹤0.01% |
1,000
-500
| -33% | -$40.2K |
|
|
ALBO
5357
CALL
DELISTED
Albireo Pharma Inc
ALBO
| $79K | ﹤0.01% |
3,700
+1,900
| +106% | +$40.2K |
|
5358
PUT
Evolent Health
EVH
$358M
| $78K | ﹤0.01% |
2,800
-4,300
| -61% | -$123K |
|
|
LAND
5359
PUT
Gladstone Land Corp
LAND
$357M
| $78K | ﹤0.01% |
4,300
-2,100
| -33% | -$41K |
|
5360
Energy Vault
NRGV
$513M
| $78K | ﹤0.01% |
25,296
+7,872
| +45% | +$29.2K |
|
|
TPH
5361
DELISTED
Tri Pointe Homes
TPH
| $78K | ﹤0.01% |
+4,198
| New | +$73K |
|
5362
UFP Industries
UFPI
$4.87B
| $78K | ﹤0.01% |
991
+921
| +1,316% | +$70.4K |
|
5363
Archer Aviation
ACHR
$3.62B
| $77K | ﹤0.01% |
41,220
+29,606
| +255% | +$73K |
|
5364
PUT
Adeia
ADEA
$2.8B
| $77K | ﹤0.01% |
+8,200
| New | +$83.4K |
|
|
AHT
5365
Ashford Hospitality Trust
AHT
$20.9M
| $77K | ﹤0.01% |
1,738
+1,312
| +308% | +$84.5K |
|
|
CHX
5366
DELISTED
ChampionX
CHX
| $77K | ﹤0.01% |
+2,689
| New | +$74.2K |
|
5367
CALL
Fluence Energy
FLNC
$1.79B
| $77K | ﹤0.01% |
4,500
-5,100
| -53% | -$80.3K |
|
5368
CALL
Kilroy Realty
KRC
$4.6B
| $77K | ﹤0.01% |
2,000
+1,100
| +122% | +$45.3K |
|
5369
CALL
Paylocity
PCTY
$7.32B
| $77K | ﹤0.01% |
400
-5,900
| -94% | -$1.27M |
|
5370
CALL
RPM International
RPM
$13.8B
| $77K | ﹤0.01% |
800
-1,400
| -64% | -$136K |
|
5371
State Street SPDR Portfolio Long Term Treasury ETF
SPTL
$10.5B
| $77K | ﹤0.01% |
+2,677
| New | +$78.4K |
|
5372
PUT
Vuzix
VUZI
$194M
| $77K | ﹤0.01% |
21,300
+7,900
| +59% | +$36.1K |
|
|
HOUS
5373
PUT
DELISTED
Anywhere Real Estate
HOUS
| $76K | ﹤0.01% |
12,000
+5,900
| +97% | +$42.6K |
|
5374
Kforce
KFRC
$1.02B
| $76K | ﹤0.01% |
+1,393
| New | +$80.5K |
|
5375
Kulicke & Soffa
KLIC
$4.62B
| $76K | ﹤0.01% |
+1,727
| New | +$75.9K |
|
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.