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 | |
|---|---|---|---|---|---|---|
|
SCIU
976
PUT
DELISTED
Global X Scientific Beta US ETF
SCIU
| $7.77M | 0.01% |
273,000
-271,500
| -50% | -$7.73M |
|
977
PUT
AB InBev
BUD
$155B
| $7.76M | 0.01% |
129,300
+52,900
| +69% | +$2.84M |
|
978
PUT
Paychex
PAYX
$39.4B
| $7.75M | 0.01% |
67,100
-77,600
| -54% | -$9.08M |
|
|
SGI
979
PUT
Somnigroup International
SGI
$14.5B
| $7.73M | 0.01% |
225,100
+176,800
| +366% | +$5.32M |
|
980
PUT
Lucid Motors
LCID
$2.52B
| $7.72M | 0.01% |
113,000
+2,020
| +2% | +$222K |
|
981
Shopify
SHOP
$145B
| $7.72M | 0.01% |
+222,300
| New | +$7.59M |
|
982
PUT
Ambarella
AMBA
$3.09B
| $7.71M | 0.01% |
93,800
+47,200
| +101% | +$3.14M |
|
983
PUT
Lazard
LAZ
$4.24B
| $7.68M | 0.01% |
221,500
+215,600
| +3,654% | +$7.67M |
|
984
CALL
HubSpot
HUBS
$9.73B
| $7.66M | 0.01% |
26,500
-47,000
| -64% | -$13.3M |
|
985
PUT
Aflac
AFL
$63.3B
| $7.65M | 0.01% |
106,400
+41,600
| +64% | +$2.79M |
|
986
CALL
ProShares Ultra S&P500
SSO
$7.82B
| $7.62M | 0.01% |
426,200
-140,800
| -25% | -$3.19M |
|
987
KraneShares CSI China Internet ETF
KWEB
$5.2B
| $7.6M | 0.01% |
251,723
-931,076
| -79% | -$23.7M |
|
988
PUT
Toll Brothers
TOL
$13.7B
| $7.58M | 0.01% |
151,800
+57,800
| +61% | +$2.66M |
|
989
CALL
BCE
BCE
$19.8B
| $7.54M | 0.01% |
171,600
-24,800
| -13% | -$1.12M |
|
990
CALL
Ciena
CIEN
$57.7B
| $7.5M | 0.01% |
147,200
+90,000
| +157% | +$4.07M |
|
991
PUT
Axsome Therapeutics
AXSM
$12.4B
| $7.49M | 0.01% |
97,100
-16,700
| -15% | -$998K |
|
992
PUT
Paylocity
PCTY
$6.46B
| $7.48M | 0.01% |
38,500
+6,900
| +22% | +$1.48M |
|
993
CALL
PennyMac Financial
PFSI
$4.29B
| $7.48M | 0.01% |
132,000
+30,900
| +31% | +$1.64M |
|
|
P
994
Everpure Inc
P
$25B
| $7.48M | 0.01% |
279,503
+154,345
| +123% | +$4.49M |
|
995
CALL
Tapestry
TPR
$28.1B
| $7.47M | 0.01% |
196,200
-33,200
| -14% | -$1.14M |
|
996
CALL
Stellantis
STLA
$16.7B
| $7.45M | 0.01% |
579,700
-123,900
| -18% | -$1.72M |
|
997
CALL
Parker-Hannifin
PH
$124B
| $7.45M | 0.01% |
25,600
+8,900
| +53% | +$2.55M |
|
998
CALL
Colgate-Palmolive
CL
$72.1B
| $7.45M | 0.01% |
94,500
-24,700
| -21% | -$1.85M |
|
999
PUT
Frontline
FRO
$8.65B
| $7.43M | 0.01% |
611,800
+448,700
| +275% | +$5.76M |
|
1000
Southwest Airlines
LUV
$21.9B
| $7.42M | 0.01% |
220,537
+197,519
| +858% | +$7.12M |
|
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.