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 | |
|---|---|---|---|---|---|---|
476
PUT
RH
RH
$3.14B
| $22.6M | 0.03% |
91,700
+4,900
| +6% | +$1.32M |
|
477
PUT
Chewy
CHWY
$8.38B
| $22.5M | 0.03% |
734,000
+52,800
| +8% | +$2.1M |
|
478
PUT
iShares Core MSCI Emerging Markets ETF
IEMG
$152B
| $22.5M | 0.03% |
540,400
-138,800
| -20% | -$6.65M |
|
479
PUT
Northrop Grumman
NOC
$75.8B
| $22.3M | 0.03% |
47,400
+14,300
| +43% | +$6.81M |
|
480
PUT
Zillow
Z
$6.77B
| $22.2M | 0.03% |
777,600
+353,600
| +83% | +$12.3M |
|
481
CALL
Teladoc Health
TDOC
$1.56B
| $22.1M | 0.03% |
872,100
+152,400
| +21% | +$5.35M |
|
482
PUT
PNC Financial Services
PNC
$99.5B
| $22.1M | 0.03% |
147,800
+47,000
| +47% | +$7.61M |
|
483
PUT
Upstart Holdings
UPST
$2.64B
| $22M | 0.02% |
1,060,000
-142,800
| -12% | -$3.84M |
|
484
PUT
Skyworks Solutions
SWKS
$9.1B
| $22M | 0.02% |
258,300
+22,000
| +9% | +$2.25M |
|
485
CALL
Scotiabank
BNS
$106B
| $22M | 0.02% |
462,400
+60,000
| +15% | +$3.43M |
|
486
CALL
Alcoa
AA
$11.9B
| $22M | 0.02% |
652,700
-36,300
| -5% | -$1.69M |
|
487
PUT
Veru
VERU
$37.1M
| $21.9M | 0.02% |
190,250
+165,090
| +656% | +$23.8M |
|
488
PUT
S&P Global
SPGI
$124B
| $21.9M | 0.02% |
71,700
-226,400
| -76% | -$81M |
|
489
PUT
Danaher
DHR
$135B
| $21.8M | 0.02% |
95,090
+2,256
| +2% | +$552K |
|
490
CALL
Nucor
NUE
$54.9B
| $21.6M | 0.02% |
202,000
-11,000
| -5% | -$1.38M |
|
491
PUT
KLA
KLAC
$286B
| $21.5M | 0.02% |
712,000
+60,000
| +9% | +$2.08M |
|
492
CALL
Peabody Energy
BTU
$2.9B
| $21.5M | 0.02% |
866,800
+386,400
| +80% | +$8.67M |
|
493
CALL
Teck Resources
TECK
$29.3B
| $21M | 0.02% |
690,200
+251,400
| +57% | +$7.76M |
|
494
CALL
Bank of Montreal
BMO
$124B
| $21M | 0.02% |
239,300
+41,800
| +21% | +$4.04M |
|
495
State Street Financial Select Sector SPDR ETF
XLF
$55.1B
| $20.9M | 0.02% |
688,487
+31,569
| +5% | +$1.04M |
|
496
PUT
Wolfspeed
WOLF
$1.35B
| $20.9M | 0.02% |
201,800
+123,400
| +157% | +$11.8M |
|
497
CALL
Toronto Dominion Bank
TD
$197B
| $20.8M | 0.02% |
339,500
-77,000
| -18% | -$4.99M |
|
498
CALL
Aon
AON
$76B
| $20.8M | 0.02% |
77,600
+17,800
| +30% | +$5.03M |
|
499
PUT
Atlassian
TEAM
$20.3B
| $20.8M | 0.02% |
98,600
+10,700
| +12% | +$2.5M |
|
500
CALL
Cintas
CTAS
$81.3B
| $20.7M | 0.02% |
213,600
+164,800
| +338% | +$16.8M |
|
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.