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 |
Microsoft
MSFT
|
+$114M |
| 2 |
NVIDIA
NVDA
|
+$85.9M |
| 3 |
Citigroup
C
|
+$61.5M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$45.5M |
| 5 |
Pfizer
PFE
|
+$41.6M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$467M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$71.2M |
| 3 |
Meta Platforms (Facebook)
META
|
+$47.6M |
| 4 |
Intel
INTC
|
+$41.9M |
| 5 |
TSMC
TSM
|
+$35.9M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.51% |
| 2 | Financials | 0.35% |
| 3 | Consumer Discretionary | 0.3% |
| 4 | Healthcare | 0.25% |
| 5 | Industrials | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
6001
PUT
Newmark Group
NMRK
$2.8B
| $69K | ﹤0.01% |
8,600
+7,400
| +617% | +$76.3K |
|
6002
CALL
NN Inc
NNBR
$297M
| $69K | ﹤0.01% |
40,700
+12,200
| +43% | +$29.6K |
|
|
SHYF
6003
CALL
DELISTED
The Shyft Group
SHYF
| $69K | ﹤0.01% |
3,400
+1,400
| +70% | +$32.7K |
|
6004
PUT
Tyler Technologies
TYL
$12.8B
| $69K | ﹤0.01% |
200
| – | – |
|
6005
Uranium Energy
UEC
$5.2B
| $69K | ﹤0.01% |
19,972
-278,466
| -93% | -$1.06M |
|
6006
Vanguard S&P Small-Cap 600 ETF
VIOO
$4.29B
| $69K | ﹤0.01% |
+860
| New | +$77K |
|
6007
Viking Therapeutics
VKTX
$3.84B
| $69K | ﹤0.01% |
+25,585
| New | +$83.8K |
|
6008
VistaGen Therapeutics
VTGN
$12.3M
| $69K | ﹤0.01% |
15,308
+13,691
| +847% | +$136K |
|
|
FORG
6009
PUT
DELISTED
ForgeRock, Inc.
FORG
| $69K | ﹤0.01% |
4,800
+2,900
| +153% | +$55.8K |
|
|
JJN
6010
DELISTED
iPath Series B Bloomberg Nickel Subindex Total ReturnSM ETN
JJN
| $69K | ﹤0.01% |
2,451
+639
| +35% | +$18.8K |
|
|
ASRT
6011
PUT
DELISTED
Assertio
ASRT
| $68K | ﹤0.01% |
2,000
+1,733
| +649% | +$78.3K |
|
6012
Aurinia Pharmaceuticals
AUPH
$1.92B
| $68K | ﹤0.01% |
9,108
-53,313
| -85% | -$461K |
|
6013
PUT
Avantor
AVTR
$9.25B
| $68K | ﹤0.01% |
3,500
-1,600
| -31% | -$42.9K |
|
6014
PUT
Vita Coco
COCO
$3.73B
| $68K | ﹤0.01% |
6,000
-17,100
| -74% | -$223K |
|
|
CTLP
6015
DELISTED
Cantaloupe
CTLP
| $68K | ﹤0.01% |
19,568
-100,818
| -84% | -$553K |
|
6016
Inovio Pharmaceuticals
INO
$68.5M
| $68K | ﹤0.01% |
3,323
-1,234
| -27% | -$31.6K |
|
6017
PUT
Renaissance International IPO ETF
IPOS
$11.7M
| $68K | ﹤0.01% |
2,400
-500
| -17% | -$8.45K |
|
6018
CALL
Lexicon Pharmaceuticals
LXRX
$1.11B
| $68K | ﹤0.01% |
28,700
+18,500
| +181% | +$51.2K |
|
6019
Lloyds Banking Group
LYG
$90.3B
| $68K | ﹤0.01% |
38,512
+2,118
| +6% | +$4.4K |
|
6020
PUT
Ramaco Resources Class A
METC
$630M
| $68K | ﹤0.01% |
7,752
-4,238
| -35% | -$43.7K |
|
6021
PUT
QuinStreet
QNST
$898M
| $68K | ﹤0.01% |
6,500
+2,500
| +63% | +$28.4K |
|
6022
SEI Investments
SEIC
$12.6B
| $68K | ﹤0.01% |
+1,391
| New | +$76K |
|
6023
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
$154M
| $68K | ﹤0.01% |
+203
| New | +$67.2K |
|
6024
PUT
Xenon Pharmaceuticals
XENE
$6.19B
| $68K | ﹤0.01% |
1,900
-3,100
| -62% | -$111K |
|
|
GTM
6025
ZoomInfo Technologies
GTM
$1.07B
| $68K | ﹤0.01% |
1,640
-2,393
| -59% | -$102K |
|
Similar funds
Simplex Trading's Q3 2022 Portfolio in Review
As of Q3 2022, Simplex Trading held 11,570 positions worth $88.5B, down 6% from $94.1B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
Simplex Trading's Q3 2022 filing shows 1,564 new, 4,281 increased, 3,851 reduced and 1,575 closed positions. Its largest new stake was Microsoft: 432,062 shares worth $101M. The largest sale was Apple, an estimated $467M.
By sector, the portfolio is most concentrated in Technology at 0.51% of assets, down from 0.84% a quarter earlier, followed by Financials and Consumer Discretionary.
- Simplex Trading's largest Q3 2022 buy was Microsoft: 432,062 shares worth $101M.
- Simplex Trading added most to NVIDIA in Q3 2022, an estimated $85.9M increase.
- Simplex Trading's biggest Q3 2022 reduction was Apple, cutting an estimated $467M.
- Simplex Trading fully exited iShares Core S&P 500 ETF in Q3 2022, selling an estimated $34.3M.
- Simplex Trading's ten largest holdings make up 38% of its $88.5B portfolio in Q3 2022.
- Simplex Trading opened 1,564 new positions and closed 1,575 in Q3 2022.
- Simplex Trading's portfolio value fell 6% quarter-over-quarter to $88.5B.
Based on Simplex Trading's 13F filing for Q3 2022, filed 4 Nov 2022.