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 | |
|---|---|---|---|---|---|---|
|
NEWP
5576
PUT
New Pacific Metals
NEWP
$859M
| $63K | ﹤0.01% |
28,000
-22,000
| -44% | -$49.6K |
|
5577
PUT
National Fuel Gas
NFG
$7.82B
| $63K | ﹤0.01% |
1,000
-200
| -17% | -$12.9K |
|
5578
PUT
NerdWallet
NRDS
$592M
| $63K | ﹤0.01% |
6,600
+5,800
| +725% | +$65.1K |
|
5579
PUT
Phillips Edison & Co
PECO
$5.46B
| $63K | ﹤0.01% |
2,000
-87,400
| -98% | -$2.69M |
|
5580
PUT
PetMed Express
PETS
$41.7M
| $63K | ﹤0.01% |
3,600
-32,500
| -90% | -$646K |
|
5581
Pultegroup
PHM
$24.1B
| $63K | ﹤0.01% |
+1,400
| New | +$59K |
|
|
SACH
5582
CALL
Sachem Capital Corp
SACH
$39.1M
| $63K | ﹤0.01% |
19,100
+800
| +4% | +$2.89K |
|
5583
Tecnoglass
TGLS
$1.93B
| $63K | ﹤0.01% |
+2,067
| New | +$53.4K |
|
5584
CALL
Teekay
TK
$1.01B
| $63K | ﹤0.01% |
13,900
+7,700
| +124% | +$32K |
|
|
UCTT
5585
Ultra Clean Holdings
UCTT
$3.73B
| $63K | ﹤0.01% |
1,906
-1,870
| -50% | -$59.6K |
|
5586
Vanguard FTSE Developed Markets ETF
VEA
$229B
| $63K | ﹤0.01% |
1,504
-3,255
| -68% | -$132K |
|
5587
iPath Series B S&P 500 VIX Mid-Term Futures ETN
VXZ
$31.1M
| $63K | ﹤0.01% |
+611
| New | +$67.8K |
|
|
ALLG
5588
DELISTED
Allego N.V.
ALLG
| $63K | ﹤0.01% |
+20,219
| New | +$69.5K |
|
|
SGFY
5589
DELISTED
Signify Health, Inc.
SGFY
| $63K | ﹤0.01% |
+2,206
| New | +$63.7K |
|
|
ACB
5590
PUT
Aurora Cannabis
ACB
$173M
| $62K | ﹤0.01% |
6,730
-17,160
| -72% | -$205K |
|
5591
Adient
ADNT
$1.65B
| $62K | ﹤0.01% |
1,813
+1,511
| +500% | +$52.8K |
|
5592
PUT
AAR Corp
AIR
$5.59B
| $62K | ﹤0.01% |
1,400
+1,100
| +367% | +$47.9K |
|
5593
CALL
Archrock
AROC
$6.27B
| $62K | ﹤0.01% |
7,000
-9,000
| -56% | -$72.1K |
|
5594
PUT
AtaiBeckley Inc
ATAI
$2.66B
| $62K | ﹤0.01% |
23,500
-29,300
| -55% | -$89K |
|
5595
CALL
Globus Maritime Ltd
GLBS
$61.9M
| $62K | ﹤0.01% |
59,600
-26,700
| -31% | -$33.7K |
|
5596
CALL
Immersion
IMMR
$251M
| $62K | ﹤0.01% |
8,900
+2,500
| +39% | +$16.1K |
|
|
OPLN
5597
PUT
Openlane
OPLN
$4.21B
| $62K | ﹤0.01% |
4,800
-13,600
| -74% | -$182K |
|
5598
CALL
Kennametal
KMT
$2.59B
| $62K | ﹤0.01% |
2,600
-400
| -13% | -$9.91K |
|
|
KW
5599
CALL
DELISTED
Kennedy-Wilson Holdings
KW
| $62K | ﹤0.01% |
4,000
+1,000
| +33% | +$16.1K |
|
5600
PUT
LSB Industries
LXU
$783M
| $62K | ﹤0.01% |
4,700
-23,300
| -83% | -$347K |
|
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.