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
|
+$53.9M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$52.9M |
| 3 |
NVIDIA
NVDA
|
+$47.1M |
| 4 |
PayPal
PYPL
|
+$41.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$28.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$51.4M |
| 2 |
Walmart Inc
WMT
|
+$46.4M |
| 3 |
VanEck Oil Services ETF
OIH
|
+$34.2M |
| 4 |
Adobe
ADBE
|
+$33.5M |
| 5 |
Starbucks
SBUX
|
+$26.8M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.41% |
| 2 | Healthcare | 0.21% |
| 3 | Consumer Discretionary | 0.21% |
| 4 | Communication Services | 0.2% |
| 5 | Financials | 0.15% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
151
CALL
United Parcel Service
UPS
$96.2B
| $93.8M | 0.08% |
523,200
+181,600
| +53% | +$32.2M |
|
152
PUT
lululemon athletica
LULU
$13.2B
| $92.7M | 0.08% |
245,000
-316,800
| -56% | -$117M |
|
153
PUT
Carnival Corporation Ltd
CCL
$35.8B
| $92M | 0.08% |
4,887,300
-1,130,700
| -19% | -$13.2M |
|
154
PUT
ARK Space & Defense Innovation ETF
ARKX
$823M
| $92M | 0.08% |
2,111,000
-1,210,800
| -36% | -$16.8M |
|
155
PUT
Morgan Stanley
MS
$340B
| $91.8M | 0.08% |
1,074,900
+74,600
| +7% | +$6.38M |
|
156
PUT
Lam Research
LRCX
$403B
| $91.2M | 0.08% |
1,419,000
-816,000
| -37% | -$46M |
|
157
CALL
Marvell Technology
MRVL
$187B
| $90.7M | 0.07% |
1,517,000
+483,800
| +47% | +$23.5M |
|
158
PUT
Applied Materials
AMAT
$448B
| $90.7M | 0.07% |
627,300
-453,300
| -42% | -$56.7M |
|
159
PUT
Chevron
CVX
$381B
| $90.4M | 0.07% |
574,800
-534,500
| -48% | -$85.7M |
|
|
SCHW
160
CALL
Charles Schwab
SCHW
$174B
| $90.4M | 0.07% |
1,754,600
+165,500
| +10% | +$8.67M |
|
161
CALL
Pinduoduo
PDD
$121B
| $90.4M | 0.07% |
1,306,800
+215,700
| +20% | +$14.8M |
|
162
PUT
Freeport-McMoran
FCX
$89.9B
| $88M | 0.07% |
2,199,100
-155,700
| -7% | -$5.93M |
|
163
PUT
Pfizer
PFE
$142B
| $87.8M | 0.07% |
2,393,500
+668,400
| +39% | +$26M |
|
164
PUT
Enphase Energy
ENPH
$5.26B
| $87.7M | 0.07% |
523,600
-69,600
| -12% | -$12.4M |
|
165
CALL
Texas Instruments
TXN
$265B
| $87.5M | 0.07% |
485,800
-45,300
| -9% | -$7.8M |
|
166
PUT
Strategy Inc
MSTR
$37B
| $87.3M | 0.07% |
2,550,000
-381,000
| -13% | -$11.5M |
|
167
CALL
Intuit
INTU
$79.3B
| $86.9M | 0.07% |
189,700
-216,700
| -53% | -$94.9M |
|
168
CALL
Deere & Co
DE
$158B
| $86.8M | 0.07% |
214,300
+151,200
| +240% | +$57.8M |
|
169
CALL
CVS Health
CVS
$137B
| $85.7M | 0.07% |
1,239,300
+240,000
| +24% | +$17.1M |
|
|
170
PUT
Deere & Co
DE
$158B
| $85M | 0.07% |
209,900
+18,000
| +9% | +$6.88M |
|
171
CALL
Wells Fargo
WFC
$266B
| $84.7M | 0.07% |
1,985,200
-600,400
| -23% | -$24.2M |
|
172
CALL
iShares MSCI Australia ETF
EWA
$1.34B
| $84.7M | 0.07% |
2,595,300
-2,232,200
| -46% | -$51.1M |
|
173
PUT
Palantir
PLTR
$318B
| $84.7M | 0.07% |
5,524,200
+2,819,600
| +104% | +$32M |
|
174
PUT
General Motors
GM
$71.7B
| $84.6M | 0.07% |
2,194,800
-431,300
| -16% | -$14.9M |
|
|
175
CALL
Pfizer
PFE
$142B
| $84.5M | 0.07% |
2,303,600
+684,400
| +42% | +$26.6M |
|
Similar funds
Simplex Trading's Q2 2023 Portfolio in Review
As of Q2 2023, Simplex Trading held 10,535 positions worth $122B, up 6.9% from $114B the previous quarter. Its ten largest holdings account for 43% of the portfolio.
Simplex Trading's Q2 2023 filing shows 1,474 new, 3,350 increased, 3,913 reduced and 1,517 closed positions. Its largest new stake was Microsoft: 171,935 shares worth $58.5M. The largest sale was Apple, an estimated $51.4M.
By sector, the portfolio is most concentrated in Technology at 0.41% of assets, down from 0.42% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q2 2023 buy was Microsoft: 171,935 shares worth $58.5M.
- Simplex Trading added most to iShares 20+ Year Treasury Bond ETF in Q2 2023, an estimated $52.9M increase.
- Simplex Trading's biggest Q2 2023 reduction was Adobe, cutting an estimated $33.5M.
- Simplex Trading fully exited Apple in Q2 2023, selling an estimated $51.4M.
- Simplex Trading's ten largest holdings make up 43% of its $122B portfolio in Q2 2023.
- Simplex Trading opened 1,474 new positions and closed 1,517 in Q2 2023.
- Simplex Trading's portfolio value rose 6.9% quarter-over-quarter to $122B.
Based on Simplex Trading's 13F filing for Q2 2023, filed 4 Aug 2023.