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 | |
|---|---|---|---|---|---|---|
4726
Smith Micro Software
SMSI
$13.6M
| $133K | ﹤0.01% |
1,593
-1,331
| -46% | -$116K |
|
4727
CALL
Sonoco
SON
$5.83B
| $133K | ﹤0.01% |
2,200
-4,400
| -67% | -$264K |
|
4728
CALL
Symbotic
SYM
$5.13B
| $133K | ﹤0.01% |
11,200
-3,100
| -22% | -$36.1K |
|
4729
Teekay Tankers
TNK
$2.71B
| $133K | ﹤0.01% |
+4,328
| New | +$138K |
|
|
MNTV
4730
DELISTED
Momentive Global Inc. Common Stock
MNTV
| $133K | ﹤0.01% |
19,044
+1,492
| +9% | +$10.8K |
|
|
AVYA
4731
CALL
DELISTED
Avaya Holdings Corp. Common Stock
AVYA
| $133K | ﹤0.01% |
680,200
+136,600
| +25% | +$153K |
|
4732
PUT
Popular Inc
BPOP
$11B
| $132K | ﹤0.01% |
2,000
+1,900
| +1,900% | +$132K |
|
4733
CALL
Evergy
EVRG
$19.4B
| $132K | ﹤0.01% |
2,100
-6,900
| -77% | -$414K |
|
|
BINI
4734
PUT
DELISTED
Bollinger Innovations
BINI
| – | – |
0
| – | – |
|
4735
CALL
Nkarta
NKTX
$152M
| $132K | ﹤0.01% |
22,200
-11,700
| -35% | -$118K |
|
4736
CALL
Purple Innovation
PRPL
$34.5M
| $132K | ﹤0.01% |
1,108
-1,244
| -53% | -$136K |
|
4737
CALL
Radiant Logistics
RLGT
$400M
| $132K | ﹤0.01% |
26,000
+7,500
| +41% | +$42K |
|
|
NVRO
4738
DELISTED
NEVRO CORP.
NVRO
| $132K | ﹤0.01% |
3,335
-13,264
| -80% | -$552K |
|
|
POSH
4739
DELISTED
Poshmark, Inc. Class A Common Stock
POSH
| $132K | ﹤0.01% |
7,398
+719
| +11% | +$12.8K |
|
4740
PUT
East-West Bancorp
EWBC
$17.8B
| $131K | ﹤0.01% |
2,000
+1,900
| +1,900% | +$130K |
|
4741
PUT
Lindblad Expeditions
LIND
$1.95B
| $131K | ﹤0.01% |
17,100
+15,200
| +800% | +$128K |
|
4742
ManpowerGroup
MAN
$2.6B
| $131K | ﹤0.01% |
1,583
+453
| +40% | +$36.3K |
|
4743
PUT
Red Violet
RDVT
$957M
| $131K | ﹤0.01% |
5,700
-100
| -2% | -$2.04K |
|
4744
CALL
Sylvamo
SLVM
$1.52B
| $131K | ﹤0.01% |
2,700
-700
| -21% | -$33.6K |
|
4745
PUT
TORM
TRMD
$3.05B
| $131K | ﹤0.01% |
4,500
+2,500
| +125% | +$67.4K |
|
4746
PUT
Sixth Street Specialty
TSLX
$1.67B
| $131K | ﹤0.01% |
7,400
+1,200
| +19% | +$21.5K |
|
|
YSG
4747
CALL
Yatsen Holding
YSG
$317M
| $131K | ﹤0.01% |
18,060
-2,420
| -12% | -$14.6K |
|
|
APPH
4748
CALL
DELISTED
AppHarvest, Inc. Common Stock
APPH
| $131K | ﹤0.01% |
231,500
-2,700
| -1% | -$3.52K |
|
4749
PUT
Gaming and Leisure Properties
GLPI
$13B
| $130K | ﹤0.01% |
2,500
-8,400
| -77% | -$419K |
|
4750
Gossamer Bio
GOSS
$101M
| $130K | ﹤0.01% |
60,345
+39,557
| +190% | +$326K |
|
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.