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 | |
|---|---|---|---|---|---|---|
651
PUT
Robinhood
HOOD
$93.8B
| $15.6M | 0.02% |
1,919,900
+774,300
| +68% | +$7.59M |
|
652
PUT
Rivian
RIVN
$24.9B
| $15.6M | 0.02% |
846,800
+125,600
| +17% | +$3.7M |
|
653
PUT
iShares Convertible Bond ETF
ICVT
$7.4B
| $15.5M | 0.02% |
515,000
-582,000
| -53% | -$40.9M |
|
654
Walt Disney
DIS
$166B
| $15.5M | 0.02% |
+178,399
| New | +$17.1M |
|
655
CALL
Southern Company
SO
$108B
| $15.5M | 0.02% |
216,900
+93,000
| +75% | +$6.22M |
|
656
CALL
Five Below
FIVE
$11.3B
| $15.4M | 0.02% |
86,900
+65,400
| +304% | +$10.3M |
|
657
CALL
EQT Corp
EQT
$33.8B
| $15.4M | 0.02% |
453,900
+181,500
| +67% | +$7.29M |
|
658
PUT
Centene
CNC
$32.5B
| $15.3M | 0.02% |
187,100
+49,600
| +36% | +$4.05M |
|
659
CALL
Wayfair
W
$11.1B
| $15.3M | 0.02% |
466,500
+204,500
| +78% | +$7.14M |
|
660
PUT
Okta
OKTA
$23.8B
| $15.3M | 0.02% |
223,900
-43,700
| -16% | -$2.5M |
|
661
CALL
Seagate
STX
$205B
| $15.3M | 0.02% |
290,300
+167,200
| +136% | +$8.89M |
|
662
PUT
Moody's
MCO
$85.5B
| $15.3M | 0.02% |
54,800
+37,100
| +210% | +$10.1M |
|
663
PUT
Lithia Motors
LAD
$7.75B
| $15.3M | 0.02% |
74,500
+61,700
| +482% | +$13.2M |
|
|
ARCH
664
CALL
DELISTED
Arch Resources, Inc.
ARCH
| $15.2M | 0.02% |
106,700
+55,000
| +106% | +$8.05M |
|
665
Bristol-Myers Squibb
BMY
$124B
| $15.2M | 0.02% |
210,946
+23,361
| +12% | +$1.76M |
|
666
CALL
Enbridge
ENB
$123B
| $15.2M | 0.02% |
387,600
+76,900
| +25% | +$3.01M |
|
667
CALL
Markel Group
MKL
$24.3B
| $15.2M | 0.02% |
11,500
-5,200
| -31% | -$6.43M |
|
668
CALL
Futu Holdings
FUTU
$14.9B
| $15.1M | 0.02% |
372,500
+211,400
| +131% | +$10.3M |
|
669
CALL
Southern Copper
SCCO
$153B
| $15.1M | 0.02% |
270,325
+140,124
| +108% | +$7.15M |
|
670
PUT
Marriott International
MAR
$97.5B
| $15.1M | 0.02% |
101,500
-36,800
| -27% | -$5.67M |
|
671
PUT
AGNC Investment
AGNC
$12.5B
| $15.1M | 0.02% |
1,458,300
+612,400
| +72% | +$5.6M |
|
672
CALL
BHP
BHP
$215B
| $15.1M | 0.02% |
284,900
+124,400
| +78% | +$7M |
|
673
CALL
Idexx Laboratories
IDXX
$43B
| $15M | 0.02% |
36,700
+7,000
| +24% | +$2.72M |
|
674
PUT
Toronto Dominion Bank
TD
$200B
| $15M | 0.02% |
231,200
+119,100
| +106% | +$7.69M |
|
675
PUT
Equifax
EFX
$20B
| $14.9M | 0.02% |
76,900
+76,700
| +38,350% | +$14M |
|
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.