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 | |
|---|---|---|---|---|---|---|
376
CALL
Dollar General
DG
$26.5B
| $34.2M | 0.04% |
152,300
+44,500
| +41% | +$11M |
|
377
PUT
The Mosaic Company
MOS
$7.24B
| $34.1M | 0.04% |
778,200
+127,400
| +20% | +$6.31M |
|
378
PUT
S&P Global
SPGI
$127B
| $34.1M | 0.04% |
101,700
+30,000
| +42% | +$9.89M |
|
379
PUT
Rio Tinto
RIO
$150B
| $34M | 0.04% |
477,000
-51,500
| -10% | -$3.23M |
|
380
CALL
Xtrackers MSCI Emerging Markets Hedged Equity ETF
DBEM
$108M
| $33.9M | 0.04% |
1,208,100
+293,300
| +32% | +$6.24M |
|
381
PUT
Kraft Heinz
KHC
$30.8B
| $33.8M | 0.04% |
830,800
-534,300
| -39% | -$20.3M |
|
382
CALL
Direxion Daily Technology Bull 3x ETF
TECL
$5.56B
| $33.7M | 0.04% |
2,338,300
-3,500
| -0.1% | -$86.5K |
|
383
PUT
Crocs
CROX
$6.77B
| $33.3M | 0.04% |
307,400
+224,600
| +271% | +$19.9M |
|
|
WBA
384
CALL
DELISTED
Walgreens Boots Alliance
WBA
| $33.3M | 0.04% |
891,900
+115,200
| +15% | +$4.33M |
|
385
PUT
Best Buy
BBY
$18.4B
| $33.3M | 0.04% |
414,900
+149,200
| +56% | +$11M |
|
386
PUT
Macy's
M
$6.4B
| $33.2M | 0.04% |
1,607,000
+869,200
| +118% | +$17.8M |
|
387
PUT
Cheniere Energy
LNG
$56B
| $33M | 0.04% |
219,800
-26,200
| -11% | -$4.38M |
|
388
CALL
Zillow
Z
$7.18B
| $32.7M | 0.04% |
1,017,700
+355,300
| +54% | +$11.8M |
|
389
PUT
Mercado Libre
MELI
$91.2B
| $32.6M | 0.04% |
38,500
-49,200
| -56% | -$43.8M |
|
390
PUT
Halliburton
HAL
$27.6B
| $32.5M | 0.04% |
826,600
-487,100
| -37% | -$17.2M |
|
391
PUT
Constellation Brands
STZ
$22.6B
| $32.5M | 0.04% |
140,100
+33,500
| +31% | +$8.02M |
|
392
PUT
Danaher
DHR
$127B
| $32.4M | 0.04% |
137,842
+42,752
| +45% | +$9.91M |
|
393
PUT
MetLife
MET
$60B
| $32.1M | 0.03% |
443,100
+193,400
| +77% | +$13.9M |
|
394
CALL
PNC Financial Services
PNC
$101B
| $31.9M | 0.03% |
202,000
+23,400
| +13% | +$3.68M |
|
395
CALL
United States Oil Fund
USO
$2.36B
| $31.8M | 0.03% |
453,700
-848,900
| -65% | -$59.4M |
|
396
PUT
Five Below
FIVE
$11.3B
| $31.7M | 0.03% |
179,100
+107,200
| +149% | +$16.9M |
|
397
CALL
Datadog
DDOG
$87.5B
| $31.5M | 0.03% |
428,500
+170,900
| +66% | +$13.4M |
|
398
PUT
Teck Resources
TECK
$28B
| $31.4M | 0.03% |
830,800
+443,300
| +114% | +$15.3M |
|
399
CALL
Phillips 66
PSX
$84.8B
| $31.4M | 0.03% |
301,400
-114,700
| -28% | -$11.7M |
|
400
CALL
Dow Inc
DOW
$22.5B
| $31.3M | 0.03% |
622,100
-150,100
| -19% | -$7.33M |
|
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.