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 | |
|---|---|---|---|---|---|---|
251
CALL
Devon Energy
DVN
$52.1B
| $49.1M | 0.06% |
817,200
-44,900
| -5% | -$2.79M |
|
252
PUT
Applied Materials
AMAT
$442B
| $49M | 0.06% |
597,600
+203,400
| +52% | +$19.6M |
|
253
PUT
Comcast
CMCSA
$85.1B
| $48.9M | 0.06% |
1,666,000
+272,800
| +20% | +$10.2M |
|
254
CALL
Cheniere Energy
LNG
$55.7B
| $48.8M | 0.06% |
294,000
+174,300
| +146% | +$26.4M |
|
255
PUT
Dollar General
DG
$26.8B
| $48.4M | 0.05% |
201,900
+40,200
| +25% | +$9.92M |
|
256
PUT
Blackrock
BLK
$161B
| $48.1M | 0.05% |
87,500
-12,900
| -13% | -$8.44M |
|
257
PUT
Petrobras
PBR
$122B
| $48M | 0.05% |
3,888,800
+2,198,200
| +130% | +$29.1M |
|
258
CALL
Roblox
RBLX
$36.3B
| $47.4M | 0.05% |
1,323,800
-128,000
| -9% | -$5.29M |
|
259
PUT
Tyson Foods
TSN
$20.2B
| $46.7M | 0.05% |
708,500
+248,900
| +54% | +$19.7M |
|
260
PUT
Lam Research
LRCX
$397B
| $46.6M | 0.05% |
1,274,000
+375,000
| +42% | +$16.7M |
|
261
PUT
Royal Caribbean
RCL
$77B
| $46.4M | 0.05% |
1,224,700
+351,900
| +40% | +$14.3M |
|
262
CALL
3M
MMM
$90.7B
| $46.4M | 0.05% |
502,320
+126,298
| +34% | +$13.9M |
|
263
PUT
Booking.com
BKNG
$139B
| $46.3M | 0.05% |
705,000
-27,500
| -4% | -$2.07M |
|
264
CALL
T-Mobile US
TMUS
$207B
| $46.1M | 0.05% |
343,400
+186,500
| +119% | +$26.2M |
|
265
CALL
United Airlines
UAL
$38B
| $46M | 0.05% |
1,414,400
-318,600
| -18% | -$11.9M |
|
266
CALL
Altria Group
MO
$122B
| $45.9M | 0.05% |
1,136,000
-71,500
| -6% | -$3.12M |
|
|
267
Berkshire Hathaway Class B
BRK.B
$1.06T
| $45.8M | 0.05% |
171,339
+159,961
| +1,406% | +$45.5M |
|
268
PUT
General Mills
GIS
$19.9B
| $45.6M | 0.05% |
595,100
+353,300
| +146% | +$26.9M |
|
269
PUT
AT&T
T
$159B
| $45.5M | 0.05% |
3,442,200
+567,300
| +20% | +$10.3M |
|
270
PUT
Kraft Heinz
KHC
$30.9B
| $45.5M | 0.05% |
1,365,100
-26,500
| -2% | -$984K |
|
271
PUT
Etsy
ETSY
$7.79B
| $45.4M | 0.05% |
453,400
-32,000
| -7% | -$3.27M |
|
|
272
PUT
T-Mobile US
TMUS
$207B
| $45.3M | 0.05% |
337,700
-87,200
| -21% | -$12.2M |
|
273
SPDR Gold Trust
GLD
$134B
| $44.4M | 0.05% |
287,272
+254,904
| +788% | +$41M |
|
274
ProShares UltraPro QQQ
TQQQ
$34.4B
| $43.9M | 0.05% |
4,548,036
+2,660,744
| +141% | +$38.8M |
|
275
PUT
United Parcel Service
UPS
$99.2B
| $43.8M | 0.05% |
271,200
-59,100
| -18% | -$11.2M |
|
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.