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 | |
|---|---|---|---|---|---|---|
3676
ARK Blockchain & Fintech Innovation ETF
ARKF
$722M
| $414K | ﹤0.01% |
26,915
-182,380
| -87% | -$3.25M |
|
|
BLUE
3677
PUT
DELISTED
bluebird bio
BLUE
| $414K | ﹤0.01% |
2,530
-8,055
| -76% | -$911K |
|
3678
Capricor Therapeutics
CAPR
$223M
| $414K | ﹤0.01% |
69,129
+52,528
| +316% | +$269K |
|
3679
CALL
Ryanair
RYAAY
$30.4B
| $414K | ﹤0.01% |
17,750
-15,250
| -46% | -$430K |
|
3680
PUT
Universal Health Services
UHS
$10.2B
| $414K | ﹤0.01% |
4,700
-12,100
| -72% | -$1.25M |
|
3681
PUT
Retractable Technologies
RVP
$19.8M
| $413K | ﹤0.01% |
209,000
+4,200
| +2% | +$14.6K |
|
|
VPU
3682
Vanguard Utilities ETF
VPU
$8.46B
| $413K | ﹤0.01% |
2,909
+1,812
| +165% | +$289K |
|
|
DOO
3683
PUT
Bombardier Recreational Products
DOO
$4.54B
| $412K | ﹤0.01% |
6,700
+5,100
| +319% | +$360K |
|
|
NETI
3684
PUT
DELISTED
Eneti Inc.
NETI
| $412K | ﹤0.01% |
61,900
-50,000
| -45% | -$355K |
|
|
AHT
3685
PUT
Ashford Hospitality Trust
AHT
$20.9M
| $411K | ﹤0.01% |
6,040
+3,260
| +117% | +$289K |
|
3686
CALL
Gaotu Techedu
GOTU
$434M
| $411K | ﹤0.01% |
339,900
+242,500
| +249% | +$392K |
|
3687
CALL
ICICI Bank
IBN
$108B
| $411K | ﹤0.01% |
19,600
+16,600
| +553% | +$351K |
|
|
ISEE
3688
DELISTED
IVERIC bio, Inc. Common Stock
ISEE
| $411K | ﹤0.01% |
22,923
-31,915
| -58% | -$419K |
|
3689
Warrior Met Coal
HCC
$4.19B
| $410K | ﹤0.01% |
+14,445
| New | +$444K |
|
3690
CALL
Sensus Healthcare
SRTS
$47.9M
| $410K | ﹤0.01% |
32,800
+22,100
| +207% | +$264K |
|
|
LLAP
3691
PUT
DELISTED
Terran Orbital Corporation
LLAP
| $410K | ﹤0.01% |
231,700
+229,400
| +9,974% | +$931K |
|
|
QUOT
3692
DELISTED
Quotient Technology Inc
QUOT
| $410K | ﹤0.01% |
177,540
+163,734
| +1,186% | +$402K |
|
3693
CALL
Hillman Solutions
HLMN
$1.54B
| $409K | ﹤0.01% |
54,300
+31,400
| +137% | +$277K |
|
3694
PUT
Seres Therapeutics
MCRB
$46.8M
| $409K | ﹤0.01% |
3,190
+3,095
| +3,258% | +$317K |
|
3695
PUT
Madrigal Pharmaceuticals
MDGL
$10.8B
| $409K | ﹤0.01% |
6,300
+2,400
| +62% | +$167K |
|
|
ORC
3696
CALL
Orchid Island Capital
ORC
$1.3B
| $409K | ﹤0.01% |
49,900
+48,820
| +4,520% | +$677K |
|
3697
CALL
Televisa
TV
$1.48B
| $409K | ﹤0.01% |
76,200
-3,500
| -4% | -$24.5K |
|
3698
PUT
The GEO Group
GEO
$4.13B
| $408K | ﹤0.01% |
53,100
+32,700
| +160% | +$241K |
|
3699
PUT
Global Ship Lease
GSL
$1.6B
| $407K | ﹤0.01% |
25,800
+2,400
| +10% | +$42.7K |
|
3700
CALL
HCI Group
HCI
$2.23B
| $407K | ﹤0.01% |
10,400
| – | – |
|
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.