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 | |
|---|---|---|---|---|---|---|
|
HPP
7526
PUT
Hudson Pacific Properties
HPP
$758M
| $10K | ﹤0.01% |
157
-1,886
| -92% | -$140K |
|
7527
PUT
Hydrofarm Holdings
HYFM
$2.66M
| $10K | ﹤0.01% |
670
-660
| -50% | -$15.1K |
|
7528
ImmunityBio
IBRX
$7.15B
| $10K | ﹤0.01% |
1,990
-53,262
| -96% | -$292K |
|
7529
CALL
InflaRx
IFRX
$243M
| $10K | ﹤0.01% |
3,400
+1,300
| +62% | +$3.31K |
|
|
NBP
7530
CALL
NovaBridge Biosciences American Depositary Shares
NBP
$186M
| $10K | ﹤0.01% |
2,500
-1,400
| -36% | -$5.3K |
|
7531
CALL
Inseego
INSG
$104M
| $10K | ﹤0.01% |
1,290
-870
| -40% | -$13.1K |
|
7532
iShares Core S&P US Growth ETF
IUSG
$30.4B
| $10K | ﹤0.01% |
123
+100
| +435% | +$8.36K |
|
7533
iShares US Consumer Staples ETF
IYK
$1.44B
| $10K | ﹤0.01% |
+153
| New | +$10.1K |
|
7534
PUT
Kite Realty
KRG
$5.86B
| $10K | ﹤0.01% |
500
+400
| +400% | +$8.15K |
|
7535
KraneShares Hang Seng TECH Index ETF
KTEC
$59.3M
| $10K | ﹤0.01% |
770
-400
| -34% | -$4.51K |
|
7536
CALL
KULR Technology Group
KULR
$112M
| $10K | ﹤0.01% |
1,050
+75
| +8% | +$926 |
|
7537
Legacy Housing
LEGH
$629M
| $10K | ﹤0.01% |
563
+100
| +22% | +$1.76K |
|
7538
PUT
Limbach Holdings
LMB
$807M
| $10K | ﹤0.01% |
+1,000
| New | +$9.52K |
|
|
LPRO
7539
PUT
Open Lending Corp
LPRO
$372M
| $10K | ﹤0.01% |
+1,500
| New | +$10.6K |
|
7540
LiveWire
LVWR
$530M
| $10K | ﹤0.01% |
2,188
-8,071
| -79% | -$54K |
|
|
7541
PUT
LiveWire
LVWR
$530M
| $10K | ﹤0.01% |
2,100
-9,600
| -82% | -$64.2K |
|
7542
PUT
Lexicon Pharmaceuticals
LXRX
$1.03B
| $10K | ﹤0.01% |
5,500
-7,100
| -56% | -$15.1K |
|
7543
National Fuel Gas
NFG
$7.69B
| $10K | ﹤0.01% |
164
-186
| -53% | -$12K |
|
7544
New Mountain Finance
NMFC
$654M
| $10K | ﹤0.01% |
809
+744
| +1,145% | +$9.17K |
|
7545
CALL
Navitas Semiconductor
NVTS
$2.54B
| $10K | ﹤0.01% |
3,000
-7,100
| -70% | -$30.4K |
|
7546
PUT
Ocugen
OCGN
$403M
| $10K | ﹤0.01% |
8,400
-53,200
| -86% | -$82.9K |
|
7547
PUT
Orthofix Medical
OFIX
$492M
| $10K | ﹤0.01% |
500
-300
| -38% | -$5.29K |
|
7548
Offerpad Solutions
OPAD
$18.5M
| $10K | ﹤0.01% |
146
-241
| -62% | -$27.8K |
|
7549
OppFi
OPFI
$813M
| $10K | ﹤0.01% |
5,253
+2,860
| +120% | +$6.44K |
|
7550
Payoneer
PAYO
$2.41B
| $10K | ﹤0.01% |
+1,974
| New | +$12.4K |
|
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.