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 | |
|---|---|---|---|---|---|---|
451
CALL
Spotify
SPOT
$97.5B
| $27.1M | 0.03% |
342,900
+107,000
| +45% | +$8.63M |
|
452
CALL
Sea Limited
SE
$64.2B
| $27M | 0.03% |
519,600
+46,400
| +10% | +$2.5M |
|
453
CALL
Agnico Eagle Mines
AEM
$73.5B
| $27M | 0.03% |
604,800
+15,000
| +3% | +$708K |
|
454
CALL
RH
RH
$3.31B
| $26.7M | 0.03% |
100,000
+2,200
| +2% | +$573K |
|
455
CALL
Snap
SNAP
$7.52B
| $26.7M | 0.03% |
2,978,400
-1,481,600
| -33% | -$14.6M |
|
456
CALL
Plug Power
PLUG
$3.11B
| $26.6M | 0.03% |
2,151,100
-438,300
| -17% | -$6.98M |
|
457
CALL
Expedia Group
EXPE
$31.3B
| $26.6M | 0.03% |
303,400
-265,700
| -47% | -$25.1M |
|
458
CALL
Albemarle
ALB
$13.9B
| $26.5M | 0.03% |
122,400
+2,800
| +2% | +$746K |
|
459
PUT
RTX Corp
RTX
$262B
| $26.5M | 0.03% |
263,000
+11,200
| +4% | +$1.05M |
|
460
CALL
Domino's
DPZ
$10.6B
| $26.5M | 0.03% |
76,500
-27,400
| -26% | -$9.58M |
|
461
CALL
Ulta Beauty
ULTA
$20.8B
| $26.4M | 0.03% |
56,300
-9,800
| -15% | -$4.23M |
|
462
PUT
Steel Dynamics
STLD
$34.4B
| $26.1M | 0.03% |
267,500
+40,700
| +18% | +$3.92M |
|
463
CALL
Humana
HUM
$47.7B
| $26M | 0.03% |
50,800
+26,500
| +109% | +$13.9M |
|
|
464
PUT
Sea Limited
SE
$64.2B
| $26M | 0.03% |
499,600
-134,100
| -21% | -$7.23M |
|
465
PUT
NXP Semiconductors
NXPI
$70.4B
| $25.9M | 0.03% |
164,200
+54,600
| +50% | +$8.66M |
|
466
PUT
CME Group
CME
$90.1B
| $25.8M | 0.03% |
153,700
+60,600
| +65% | +$10.5M |
|
467
CALL
NIO
NIO
$11.7B
| $25.8M | 0.03% |
2,643,100
+134,800
| +5% | +$1.55M |
|
|
468
PUT
Snap
SNAP
$7.52B
| $25.7M | 0.03% |
2,875,200
+255,900
| +10% | +$2.52M |
|
469
CALL
Unity
U
$12.8B
| $25.7M | 0.03% |
899,800
+329,000
| +58% | +$10.3M |
|
|
SPLK
470
PUT
DELISTED
Splunk Inc
SPLK
| $25.7M | 0.03% |
298,100
-128,400
| -30% | -$10.4M |
|
471
CALL
Estee Lauder
EL
$29.9B
| $25.7M | 0.03% |
103,400
-23,600
| -19% | -$5.27M |
|
472
PUT
Altria Group
MO
$121B
| $25.4M | 0.03% |
555,400
-214,700
| -28% | -$9.73M |
|
473
PUT
TJX Companies
TJX
$172B
| $25.4M | 0.03% |
318,800
+151,900
| +91% | +$11.2M |
|
|
474
PUT
Estee Lauder
EL
$29.9B
| $25.4M | 0.03% |
102,200
+8,200
| +9% | +$1.83M |
|
475
CALL
Norwegian Cruise Line
NCLH
$8.87B
| $25.2M | 0.03% |
2,057,600
+717,300
| +54% | +$10.8M |
|
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.