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 | |
|---|---|---|---|---|---|---|
651
CALL
PG&E
PCG
$47B
| $13.9M | 0.02% |
1,108,800
-114,900
| -9% | -$1.35M |
|
652
CALL
Invesco CurrencyShares Euro Currency Trust
FXE
$331M
| $13.8M | 0.02% |
152,800
+61,000
| +66% | +$5.67M |
|
|
FLNA
653
PUT
Filana Therapeutics
FLNA
$45M
| $13.8M | 0.02% |
330,100
+122,500
| +59% | +$3.31M |
|
654
CALL
Kroger
KR
$34.2B
| $13.8M | 0.02% |
314,400
-172,700
| -35% | -$8.2M |
|
655
CALL
Vertex Pharmaceuticals
VRTX
$120B
| $13.8M | 0.02% |
47,500
-3,300
| -6% | -$949K |
|
656
CALL
Match Group
MTCH
$8.72B
| $13.6M | 0.02% |
285,000
+49,600
| +21% | +$3.12M |
|
657
State Street Consumer Staples Select Sector SPDR ETF
XLP
$14B
| $13.6M | 0.02% |
+203,802
| New | +$14.9M |
|
|
FISV
658
PUT
Fiserv Inc
FISV
$26.6B
| $13.6M | 0.02% |
145,300
+68,500
| +89% | +$6.98M |
|
659
PUT
US Bancorp Series B Preferred Stock
USB.PRH
$744M
| $13.5M | 0.02% |
335,600
-109,100
| -25% | -$2.17M |
|
660
PUT
Microchip Technology
MCHP
$44.2B
| $13.5M | 0.02% |
221,600
+120,800
| +120% | +$7.93M |
|
661
Lockheed Martin
LMT
$131B
| $13.5M | 0.02% |
34,956
+2,792
| +9% | +$1.17M |
|
662
CALL
Peloton Interactive
PTON
$2.61B
| $13.5M | 0.02% |
1,946,200
+623,200
| +47% | +$6.33M |
|
663
PUT
Akamai
AKAM
$17.1B
| $13.5M | 0.02% |
167,900
-97,400
| -37% | -$8.87M |
|
664
PUT
AstraZeneca
AZN
$261B
| $13.4M | 0.02% |
122,500
+23,500
| +24% | +$2.98M |
|
665
PUT
Caesars Entertainment
CZR
$6.09B
| $13.3M | 0.02% |
413,800
+131,400
| +47% | +$5.72M |
|
666
PUT
Peabody Energy
BTU
$2.9B
| $13.3M | 0.02% |
537,800
+219,700
| +69% | +$4.93M |
|
667
Bristol-Myers Squibb
BMY
$126B
| $13.3M | 0.02% |
187,585
-53,474
| -22% | -$3.88M |
|
668
PUT
Chubb
CB
$137B
| $13.3M | 0.02% |
73,300
-5,400
| -7% | -$1.03M |
|
|
LTHM
669
CALL
DELISTED
Livent Corporation
LTHM
| $13.3M | 0.02% |
434,700
+273,700
| +170% | +$7.67M |
|
670
CALL
HCA Healthcare
HCA
$83.5B
| $13.3M | 0.02% |
72,300
+54,000
| +295% | +$10.8M |
|
671
PUT
T. Rowe Price
TROW
$24.6B
| $13.3M | 0.02% |
126,500
+69,800
| +123% | +$8.33M |
|
|
HES
672
PUT
DELISTED
Hess
HES
| $13.3M | 0.02% |
121,800
-47,100
| -28% | -$5.22M |
|
673
CALL
Vanguard Dividend Appreciation ETF
VIG
$110B
| $13.3M | 0.02% |
98,200
-4,400
| -4% | -$655K |
|
674
CALL
Royal Gold
RGLD
$16.9B
| $13.2M | 0.02% |
141,000
+107,600
| +322% | +$10.7M |
|
675
PUT
ON Semiconductor
ON
$35.1B
| $13.1M | 0.01% |
210,800
-91,300
| -30% | -$5.88M |
|
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.