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 | |
|---|---|---|---|---|---|---|
1201
PUT
Gartner
IT
$9.24B
| $5.21M | 0.01% |
15,500
-18,700
| -55% | -$6.03M |
|
1202
Mastercard
MA
$472B
| $5.21M | 0.01% |
14,979
+768
| +5% | +$253K |
|
|
MAXR
1203
DELISTED
Maxar Technologies Inc. Common Stock
MAXR
| $5.2M | 0.01% |
100,435
+99,169
| +7,833% | +$2.72M |
|
1204
CALL
Floor & Decor
FND
$5.75B
| $5.19M | 0.01% |
74,600
-3,400
| -4% | -$247K |
|
1205
PUT
Cencora
COR
$59.7B
| $5.19M | 0.01% |
31,300
-45,600
| -59% | -$7.2M |
|
1206
PUT
Urban Outfitters
URBN
$5.95B
| $5.16M | 0.01% |
216,500
-300
| -0.1% | -$7.47K |
|
1207
PUT
ICICI Bank
IBN
$106B
| $5.14M | 0.01% |
234,800
+37,300
| +19% | +$831K |
|
1208
CALL
Amplify Junior Silver Miners ETF
SILJ
$3.28B
| $5.14M | 0.01% |
530,100
+52,000
| +11% | +$526K |
|
|
UNVR
1209
PUT
DELISTED
Univar Solutions Inc.
UNVR
| $5.09M | 0.01% |
160,200
+159,700
| +31,940% | +$4.58M |
|
1210
PUT
First Citizens BancShares
FCNCA
$25.3B
| $5.08M | 0.01% |
6,700
-2,400
| -26% | -$1.93M |
|
1211
CALL
Valvoline
VVV
$4.89B
| $5.06M | 0.01% |
155,100
+57,700
| +59% | +$1.75M |
|
1212
PUT
Lumen
LUMN
$6.62B
| $5.05M | 0.01% |
967,300
-970,500
| -50% | -$5.96M |
|
1213
CALL
Ventas
VTR
$48.3B
| $5.04M | 0.01% |
111,900
-15,500
| -12% | -$654K |
|
1214
PUT
Mattel
MAT
$4.14B
| $5.01M | 0.01% |
280,800
+94,300
| +51% | +$1.71M |
|
1215
W.W. Grainger
GWW
$64.5B
| $5M | 0.01% |
8,982
-882
| -9% | -$498K |
|
1216
CALL
Vistra
VST
$56.7B
| $4.99M | 0.01% |
215,000
-61,100
| -22% | -$1.41M |
|
1217
PUT
iQIYI
IQ
$1.16B
| $4.97M | 0.01% |
938,500
+106,800
| +13% | +$311K |
|
1218
CALL
H&R Block
HRB
$5.14B
| $4.97M | 0.01% |
136,100
-28,600
| -17% | -$1.16M |
|
1219
CALL
Fastenal
FAST
$53.5B
| $4.96M | 0.01% |
209,800
+53,000
| +34% | +$1.3M |
|
|
CYBR
1220
CALL
DELISTED
CyberArk
CYBR
| $4.95M | 0.01% |
38,200
-600
| -2% | -$86.7K |
|
1221
PUT
Check Point Software Technologies
CHKP
$13.1B
| $4.95M | 0.01% |
39,200
+4,000
| +11% | +$499K |
|
1222
Align Technology
ALGN
$12B
| $4.94M | 0.01% |
23,406
+6,345
| +37% | +$1.27M |
|
1223
PUT
Fluor
FLR
$7.38B
| $4.93M | 0.01% |
142,400
+106,400
| +296% | +$3.4M |
|
1224
iShares Select Dividend ETF
DVY
$23.8B
| $4.93M | 0.01% |
40,885
+32,012
| +361% | +$3.79M |
|
1225
CALL
Baker Hughes
BKR
$57.6B
| $4.92M | 0.01% |
166,800
-43,700
| -21% | -$1.21M |
|
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.