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 | |
|---|---|---|---|---|---|---|
1251
PUT
Academy Sports + Outdoors
ASO
$2.89B
| $4.67M | 0.01% |
110,600
+12,700
| +13% | +$556K |
|
1252
iShares MSCI Japan ETF
EWJ
$21.7B
| $4.66M | 0.01% |
+95,440
| New | +$5.11M |
|
1253
PUT
Crown Holdings
CCK
$12.8B
| $4.66M | 0.01% |
57,500
+200
| +0.3% | +$18.6K |
|
1254
CALL
Qorvo
QRVO
$7.63B
| $4.65M | 0.01% |
58,600
-26,500
| -31% | -$2.56M |
|
1255
CALL
Asana
ASAN
$1.58B
| $4.65M | 0.01% |
209,200
+82,400
| +65% | +$1.77M |
|
1256
Novartis
NVS
$295B
| $4.63M | 0.01% |
60,959
+36,194
| +146% | +$3M |
|
|
FYBR
1257
CALL
DELISTED
Frontier Communications
FYBR
| $4.63M | 0.01% |
197,400
+40,000
| +25% | +$1.02M |
|
1258
PUT
Dynatrace
DT
$12.1B
| $4.62M | 0.01% |
132,700
-11,400
| -8% | -$441K |
|
1259
PUT
Cognizant
CTSH
$21.5B
| $4.62M | 0.01% |
80,400
+37,100
| +86% | +$2.43M |
|
|
PDCE
1260
CALL
DELISTED
PDC Energy, Inc.
PDCE
| $4.62M | 0.01% |
79,900
+21,700
| +37% | +$1.33M |
|
|
JWN
1261
PUT
DELISTED
Nordstrom
JWN
| $4.61M | 0.01% |
275,300
-154,200
| -36% | -$3.22M |
|
|
HIMX
1262
CALL
Himax Technologies
HIMX
$2.2B
| $4.59M | 0.01% |
948,000
+26,300
| +3% | +$168K |
|
1263
PUT
Elastic
ESTC
$6.1B
| $4.58M | 0.01% |
63,800
+30,900
| +94% | +$2.46M |
|
1264
PUT
Trip.com Group
TCOM
$27.5B
| $4.58M | 0.01% |
167,600
-42,500
| -20% | -$1.11M |
|
1265
PUT
Monster Beverage
MNST
$91.4B
| $4.57M | 0.01% |
105,000
+18,000
| +21% | +$829K |
|
1266
CALL
MP Materials
MP
$7.35B
| $4.56M | 0.01% |
167,100
-14,000
| -8% | -$458K |
|
1267
PUT
GlobalFoundries
GFS
$29.4B
| $4.54M | 0.01% |
94,000
+78,500
| +506% | +$4.23M |
|
|
LAC
1268
CALL
DELISTED
Lithium Americas Corp. Common Shares
LAC
| $4.54M | 0.01% |
173,200
-90,100
| -34% | -$2.4M |
|
1269
CALL
Hershey
HSY
$35.4B
| $4.54M | 0.01% |
20,600
+2,400
| +13% | +$538K |
|
1270
CALL
Opendoor
OPEN
$3.7B
| $4.54M | 0.01% |
1,507,013
+674,043
| +81% | +$3.09M |
|
1271
PUT
DigitalOcean
DOCN
$14.4B
| $4.52M | 0.01% |
124,900
+500
| +0.4% | +$21K |
|
1272
CALL
Logitech
LOGI
$15.2B
| $4.5M | 0.01% |
97,900
+33,400
| +52% | +$1.76M |
|
1273
CALL
Roper Technologies
ROP
$36.3B
| $4.5M | 0.01% |
12,500
+8,500
| +213% | +$3.46M |
|
1274
CALL
KE Holdings
BEKE
$16.8B
| $4.49M | 0.01% |
256,400
-10,800
| -4% | -$175K |
|
|
APLS
1275
PUT
DELISTED
Apellis Pharmaceuticals
APLS
| $4.49M | 0.01% |
65,700
+47,700
| +265% | +$2.82M |
|
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.