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 | |
|---|---|---|---|---|---|---|
|
NIB
6351
DELISTED
iPath Bloomberg Cocoa Subindex Total Return ETN due June 24, 2038
NIB
| $33K | ﹤0.01% |
1,208
-4,166
| -78% | -$109K |
|
|
BRMK
6352
CALL
DELISTED
Broadmark Realty Capital Inc. Common Stock
BRMK
| $33K | ﹤0.01% |
9,300
+6,300
| +210% | +$29.3K |
|
|
CNCE
6353
DELISTED
Concert Pharmaceuticals, Inc.
CNCE
| $33K | ﹤0.01% |
5,789
-473
| -8% | -$2.49K |
|
6354
CALL
Acumen Pharmaceuticals
ABOS
$155M
| $32K | ﹤0.01% |
6,100
-46,300
| -88% | -$311K |
|
6355
PUT
ACV Auctions
ACVA
$1.31B
| $32K | ﹤0.01% |
3,900
-300
| -7% | -$2.51K |
|
6356
Aterian
ATER
$4.45M
| $32K | ﹤0.01% |
3,570
+3,553
| +20,900% | +$44.5K |
|
|
AZEK
6357
PUT
DELISTED
The AZEK Co
AZEK
| $32K | ﹤0.01% |
1,600
-1,500
| -48% | -$27.8K |
|
6358
Credicorp
BAP
$31.8B
| $32K | ﹤0.01% |
242
+219
| +952% | +$31K |
|
6359
BBVA Argentina
BBAR
$3.87B
| $32K | ﹤0.01% |
+8,341
| New | +$25.7K |
|
6360
CALL
Brink's
BCO
$4.88B
| $32K | ﹤0.01% |
600
+200
| +50% | +$11.6K |
|
6361
PUT
BGC Group
BGC
$5.45B
| $32K | ﹤0.01% |
8,500
-900
| -10% | -$3.55K |
|
6362
PUT
CubeSmart
CUBE
$9.39B
| $32K | ﹤0.01% |
800
+400
| +100% | +$16.1K |
|
6363
CALL
Driven Brands
DRVN
$2.35B
| $32K | ﹤0.01% |
1,200
-6,600
| -85% | -$197K |
|
6364
DTE Energy
DTE
$29.5B
| $32K | ﹤0.01% |
+274
| New | +$31.1K |
|
6365
PUT
Envela
ELA
$563M
| $32K | ﹤0.01% |
6,200
-2,100
| -25% | -$10.8K |
|
6366
CALL
First Watch Restaurant Group
FWRG
$792M
| $32K | ﹤0.01% |
2,400
+2,200
| +1,100% | +$33.5K |
|
6367
International General Insurance
IGIC
$1.19B
| $32K | ﹤0.01% |
4,067
-211
| -5% | -$1.63K |
|
6368
CALL
Knowles
KN
$3.13B
| $32K | ﹤0.01% |
2,000
+600
| +43% | +$8.71K |
|
6369
PUT
Kodak
KODK
$822M
| $32K | ﹤0.01% |
10,800
-56,000
| -84% | -$246K |
|
6370
Quaker Houghton
KWR
$2.76B
| $32K | ﹤0.01% |
+197
| New | +$33.1K |
|
|
LAND
6371
Gladstone Land Corp
LAND
$350M
| $32K | ﹤0.01% |
1,756
-836
| -32% | -$16.3K |
|
6372
PUT
Landstar System
LSTR
$5.93B
| $32K | ﹤0.01% |
200
-19,900
| -99% | -$3.19M |
|
6373
Lexicon Pharmaceuticals
LXRX
$1.03B
| $32K | ﹤0.01% |
17,208
+2,373
| +16% | +$5.05K |
|
6374
Nordson
NDSN
$16.6B
| $32K | ﹤0.01% |
137
+44
| +47% | +$10K |
|
6375
CALL
NextDecade
NEXT
$1.79B
| $32K | ﹤0.01% |
6,500
-50,400
| -89% | -$289K |
|
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.