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 |
Microsoft
MSFT
|
+$114M |
| 2 |
NVIDIA
NVDA
|
+$85.9M |
| 3 |
Citigroup
C
|
+$61.5M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$45.5M |
| 5 |
Pfizer
PFE
|
+$41.6M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$467M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$71.2M |
| 3 |
Meta Platforms (Facebook)
META
|
+$47.6M |
| 4 |
Intel
INTC
|
+$41.9M |
| 5 |
TSMC
TSM
|
+$35.9M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.51% |
| 2 | Financials | 0.35% |
| 3 | Consumer Discretionary | 0.3% |
| 4 | Healthcare | 0.25% |
| 5 | Industrials | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
401
PUT
United Rentals
URI
$71.4B
| $28.3M | 0.03% |
104,900
+58,200
| +125% | +$16.9M |
|
|
X
402
CALL
DELISTED
US Steel
X
| $28.1M | 0.03% |
1,553,100
-124,600
| -7% | -$2.66M |
|
403
PUT
Invesco CurrencyShares Euro Currency Trust
FXE
$331M
| $28.1M | 0.03% |
310,400
+132,000
| +74% | +$12.3M |
|
404
PUT
iShares Convertible Bond ETF
ICVT
$7.37B
| $28.1M | 0.03% |
1,097,000
+640,100
| +140% | +$46.4M |
|
405
CALL
Royal Caribbean
RCL
$76B
| $28M | 0.03% |
738,700
-110,400
| -13% | -$4.47M |
|
406
CALL
Palantir
PLTR
$296B
| $27.9M | 0.03% |
3,435,000
-464,200
| -12% | -$4.13M |
|
407
CALL
Delta Air Lines
DAL
$53.9B
| $27.8M | 0.03% |
992,100
-762,200
| -43% | -$24.2M |
|
408
PUT
Vertex Pharmaceuticals
VRTX
$120B
| $27.8M | 0.03% |
96,000
+41,900
| +77% | +$12.1M |
|
409
PUT
Gilead Sciences
GILD
$162B
| $27.7M | 0.03% |
449,100
-122,800
| -21% | -$7.74M |
|
410
CALL
ON Semiconductor
ON
$35.1B
| $27.6M | 0.03% |
443,400
+42,200
| +11% | +$2.72M |
|
411
PUT
Colgate-Palmolive
CL
$72.1B
| $27.5M | 0.03% |
390,900
+106,500
| +37% | +$8.35M |
|
412
CALL
Estee Lauder
EL
$28.9B
| $27.4M | 0.03% |
127,000
+29,200
| +30% | +$7.45M |
|
413
CALL
Marriott International
MAR
$96.1B
| $27M | 0.03% |
192,800
+41,800
| +28% | +$6.39M |
|
414
PUT
Hilton Worldwide
HLT
$72.9B
| $27M | 0.03% |
223,800
-62,400
| -22% | -$7.89M |
|
415
Amazon
AMZN
$2.51T
| $27M | 0.03% |
238,592
-49,415
| -17% | -$6.25M |
|
416
CALL
ASML
ASML
$693B
| $27M | 0.03% |
64,900
+22,100
| +52% | +$11.1M |
|
417
CALL
iShares Core MSCI Emerging Markets ETF
IEMG
$152B
| $26.9M | 0.03% |
576,900
+103,200
| +22% | +$4.95M |
|
418
PUT
Warner Bros
WBD
$65.1B
| $26.9M | 0.03% |
2,338,600
-621,200
| -21% | -$8.44M |
|
419
CALL
Wynn Resorts
WYNN
$10B
| $26.8M | 0.03% |
425,500
-1,900
| -0.4% | -$118K |
|
420
PUT
CF Industries
CF
$19.5B
| $26.8M | 0.03% |
278,200
-6,200
| -2% | -$605K |
|
421
CALL
Akamai
AKAM
$17.1B
| $26.8M | 0.03% |
333,300
-500
| -0.1% | -$45.5K |
|
422
CALL
PNC Financial Services
PNC
$99.5B
| $26.7M | 0.03% |
178,600
+67,400
| +61% | +$10.9M |
|
|
423
CALL
United Rentals
URI
$71.4B
| $26.6M | 0.03% |
98,500
+33,300
| +51% | +$9.69M |
|
424
CALL
Sea Limited
SE
$60.9B
| $26.5M | 0.03% |
473,200
-152,000
| -24% | -$10.6M |
|
425
CALL
Ulta Beauty
ULTA
$20.5B
| $26.5M | 0.03% |
66,100
+26,300
| +66% | +$10.6M |
|
Similar funds
Simplex Trading's Q3 2022 Portfolio in Review
As of Q3 2022, Simplex Trading held 11,570 positions worth $88.5B, down 6% from $94.1B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
Simplex Trading's Q3 2022 filing shows 1,564 new, 4,281 increased, 3,851 reduced and 1,575 closed positions. Its largest new stake was Microsoft: 432,062 shares worth $101M. The largest sale was Apple, an estimated $467M.
By sector, the portfolio is most concentrated in Technology at 0.51% of assets, down from 0.84% a quarter earlier, followed by Financials and Consumer Discretionary.
- Simplex Trading's largest Q3 2022 buy was Microsoft: 432,062 shares worth $101M.
- Simplex Trading added most to NVIDIA in Q3 2022, an estimated $85.9M increase.
- Simplex Trading's biggest Q3 2022 reduction was Apple, cutting an estimated $467M.
- Simplex Trading fully exited iShares Core S&P 500 ETF in Q3 2022, selling an estimated $34.3M.
- Simplex Trading's ten largest holdings make up 38% of its $88.5B portfolio in Q3 2022.
- Simplex Trading opened 1,564 new positions and closed 1,575 in Q3 2022.
- Simplex Trading's portfolio value fell 6% quarter-over-quarter to $88.5B.
Based on Simplex Trading's 13F filing for Q3 2022, filed 4 Nov 2022.