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 | |
|---|---|---|---|---|---|---|
3551
CALL
Trimble
TRMB
$13.6B
| $353K | ﹤0.01% |
7,000
-67,900
| -91% | -$3.78M |
|
3552
PUT
Visteon
VC
$2.85B
| $353K | ﹤0.01% |
2,700
+900
| +50% | +$120K |
|
3553
CALL
Hyatt Hotels
H
$17.8B
| $352K | ﹤0.01% |
3,900
-43,400
| -92% | -$3.98M |
|
3554
Nano X Imaging
NNOX
$61.1M
| $352K | ﹤0.01% |
47,723
+47,523
| +23,762% | +$527K |
|
|
AHRT
3555
CALL
AH Realty Trust
AHRT
$540M
| $351K | ﹤0.01% |
30,600
+26,200
| +595% | +$302K |
|
3556
CALL
Banco Bilbao Vizcaya Argentaria
BBVA
$147B
| $351K | ﹤0.01% |
58,500
+42,400
| +263% | +$229K |
|
|
RIDE
3557
CALL
DELISTED
Lordstown Motors Corp. Class A Common Stock
RIDE
| $351K | ﹤0.01% |
20,533
-9,854
| -32% | -$229K |
|
3558
CALL
Alpha Pro Tech
APT
$51.1M
| $350K | ﹤0.01% |
87,100
-36,500
| -30% | -$149K |
|
3559
State Street SPDR S&P China ETF
GXC
$453M
| $350K | ﹤0.01% |
4,470
-167
| -4% | -$12.1K |
|
3560
PUT
Natural Gas Services Group
NGS
$460M
| $350K | ﹤0.01% |
+30,600
| New | +$334K |
|
3561
Darling Ingredients
DAR
$9.28B
| $348K | ﹤0.01% |
+5,574
| New | +$393K |
|
3562
PUT
Uranium Energy
UEC
$4.67B
| $348K | ﹤0.01% |
89,800
-26,100
| -23% | -$99.1K |
|
3563
CALL
Westlake Corp
WLK
$9.25B
| $348K | ﹤0.01% |
3,400
+900
| +36% | +$90.7K |
|
3564
PUT
Celanese
CE
$4.77B
| $347K | ﹤0.01% |
3,400
-7,300
| -68% | -$724K |
|
3565
iShares Core S&P Total US Stock Market ETF
ITOT
$93.7B
| $347K | ﹤0.01% |
4,100
-1,849
| -31% | -$158K |
|
|
LICY
3566
CALL
DELISTED
Li-Cycle Holdings Corp.
LICY
| $347K | ﹤0.01% |
9,138
+275
| +3% | +$12.3K |
|
3567
PUT
Bread Financial
BFH
$4.36B
| $346K | ﹤0.01% |
9,000
-23,200
| -72% | -$838K |
|
3568
First Horizon
FHN
$12.3B
| $346K | ﹤0.01% |
14,136
-23,911
| -63% | -$579K |
|
3569
CALL
Fortive
FTV
$19.5B
| $346K | ﹤0.01% |
7,166
+5,972
| +500% | +$289K |
|
|
FOCS
3570
CALL
DELISTED
Focus Financial Partners Inc. Class A
FOCS
| $346K | ﹤0.01% |
9,300
+2,600
| +39% | +$92.5K |
|
3571
PUT
Array Technologies
ARRY
$785M
| $344K | ﹤0.01% |
17,800
-203,400
| -92% | -$3.86M |
|
3572
CALL
CVR Energy
CVI
$3.39B
| $344K | ﹤0.01% |
11,000
-4,800
| -30% | -$170K |
|
|
ERF
3573
PUT
DELISTED
Enerplus Corporation
ERF
| $344K | ﹤0.01% |
19,500
-33,400
| -63% | -$573K |
|
3574
Strategy Inc
MSTR
$35.1B
| $342K | ﹤0.01% |
24,160
-38,790
| -62% | -$793K |
|
|
VERV
3575
CALL
DELISTED
Verve Therapeutics
VERV
| $342K | ﹤0.01% |
17,700
+1,500
| +9% | +$39.7K |
|
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.