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 | |
|---|---|---|---|---|---|---|
3301
PUT
Kosmos Energy
KOS
$1.45B
| $439K | ﹤0.01% |
69,100
+14,300
| +26% | +$89.3K |
|
3302
Interactive Brokers
IBKR
$41.1B
| $438K | ﹤0.01% |
24,236
+10,276
| +74% | +$192K |
|
3303
CALL
NBT Bancorp
NBTB
$2.73B
| $438K | ﹤0.01% |
10,100
-3,300
| -25% | -$146K |
|
3304
PUT
Apple Hospitality REIT
APLE
$3.98B
| $437K | ﹤0.01% |
27,700
+11,600
| +72% | +$187K |
|
3305
PUT
Globant
GLOB
$1.41B
| $437K | ﹤0.01% |
2,600
+1,600
| +160% | +$283K |
|
|
ABMD
3306
CALL
DELISTED
Abiomed Inc
ABMD
| $437K | ﹤0.01% |
60,900
+56,800
| +1,385% | +$18.9M |
|
|
VNET
3307
VNET Group
VNET
$2.04B
| $436K | ﹤0.01% |
+77,017
| New | +$397K |
|
3308
Commercial Metals
CMC
$7.53B
| $435K | ﹤0.01% |
9,020
+2,215
| +33% | +$102K |
|
3309
PUT
Ethan Allen Interiors
ETD
$592M
| $435K | ﹤0.01% |
16,500
-10,900
| -40% | -$281K |
|
3310
State Street SPDR S&P Insurance ETF
KIE
$654M
| $435K | ﹤0.01% |
+10,644
| New | +$429K |
|
3311
CALL
Schrodinger
SDGR
$1.14B
| $435K | ﹤0.01% |
23,300
-5,700
| -20% | -$118K |
|
3312
State Street Technology Select Sector SPDR ETF
XLK
$114B
| $435K | ﹤0.01% |
7,000
| – | – |
|
3313
PUT
Avery Dennison
AVY
$12.5B
| $434K | ﹤0.01% |
2,400
-100
| -4% | -$17.8K |
|
3314
Gartner
IT
$9.87B
| $434K | ﹤0.01% |
1,293
-1,151
| -47% | -$371K |
|
3315
CALL
Coca-Cola Femsa
KOF
$22.9B
| $434K | ﹤0.01% |
6,400
+1,600
| +33% | +$104K |
|
|
BLDP
3316
PUT
Ballard Power Systems
BLDP
$865M
| $433K | ﹤0.01% |
90,400
+33,100
| +58% | +$188K |
|
3317
Globalstar
GSAT
$10.2B
| $433K | ﹤0.01% |
21,739
+17,235
| +383% | +$453K |
|
3318
PUT
Liberty Broadband Class C
LBRDK
$4.44B
| $433K | ﹤0.01% |
5,700
+2,400
| +73% | +$195K |
|
3319
PUT
Viasat
VSAT
$10.2B
| $433K | ﹤0.01% |
13,700
-6,500
| -32% | -$227K |
|
3320
CALL
AvePoint
AVPT
$2.72B
| $432K | ﹤0.01% |
105,300
-23,800
| -18% | -$102K |
|
3321
Alphatec Holdings
ATEC
$1.33B
| $431K | ﹤0.01% |
+34,928
| New | +$352K |
|
3322
CALL
IHS Holding
IHS
$2.77B
| $431K | ﹤0.01% |
70,200
-19,500
| -22% | -$121K |
|
3323
CALL
Privia Health
PRVA
$3.11B
| $431K | ﹤0.01% |
19,000
-16,900
| -47% | -$470K |
|
3324
CALL
Regal Rexnord
RRX
$14B
| $431K | ﹤0.01% |
3,600
+2,500
| +227% | +$328K |
|
3325
PUT
Ashland
ASH
$3.04B
| $430K | ﹤0.01% |
4,000
+3,900
| +3,900% | +$411K |
|
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.