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 |
NVIDIA
NVDA
|
+$29.6M |
| 2 |
State Street Industrial Select Sector SPDR ETF
XLI
|
+$22.6M |
| 3 |
iShares Russell 2000 ETF
IWM
|
+$17.9M |
| 4 |
Netflix
NFLX
|
+$17.1M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$13.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Invesco QQQ Trust
QQQ
|
+$123M |
| 2 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$40.6M |
| 3 |
Walt Disney
DIS
|
+$25.6M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$13.5M |
| 5 |
Johnson & Johnson
JNJ
|
+$11.2M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.5% |
| 2 | Communication Services | 0.5% |
| 3 | Healthcare | 0.35% |
| 4 | Industrials | 0.3% |
| 5 | Consumer Discretionary | 0.26% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
201
CALL
Starbucks
SBUX
$119B
| $23.9M | 0.07% |
2,850
-985
| -26% | -$77.2K |
|
|
TWTR
202
PUT
DELISTED
Twitter, Inc.
TWTR
| $23.9M | 0.07% |
6,845
-569
| -8% | -$20.9K |
|
203
CALL
United Parcel Service
UPS
$98.9B
| $23.8M | 0.06% |
2,302
-1,565
| -40% | -$163K |
|
204
PUT
Eli Lilly
LLY
$1.05T
| $23.3M | 0.06% |
2,106
+45
| +2% | +$5.3K |
|
205
PUT
PepsiCo
PEP
$184B
| $22.9M | 0.06% |
1,750
-1,029
| -37% | -$132K |
|
206
PUT
American Express
AXP
$239B
| $22.9M | 0.06% |
1,853
+579
| +45% | +$68K |
|
207
PUT
Wells Fargo
WFC
$266B
| $22.8M | 0.06% |
4,824
-1,205
| -20% | -$56.4K |
|
208
PUT
AT&T
T
$155B
| $22.8M | 0.06% |
8,998
-2,104
| -19% | -$50.5K |
|
209
CALL
Intuitive Surgical
ISRG
$124B
| $22.8M | 0.06% |
1,302
-69
| -5% | -$11.8K |
|
|
SHNY
210
PUT
DELISTED
Direxion Daily Silver Miners Index Bull 2X Shares
SHNY
| $22.7M | 0.06% |
6,033
-833
| -12% | -$3.14M |
|
|
UWC
211
PUT
DELISTED
PROSHARES TR ULTRA RUSSELL3000
UWC
| $22.7M | 0.06% |
3,615
+428
| +13% | +$2.68M |
|
212
CALL
Coca-Cola
KO
$353B
| $22.6M | 0.06% |
4,444
+563
| +15% | +$27.6K |
|
213
PUT
Target
TGT
$63.4B
| $22.4M | 0.06% |
2,581
+1,055
| +69% | +$85.2K |
|
214
PUT
United Rentals
URI
$63.4B
| $22.3M | 0.06% |
1,682
-158
| -9% | -$20.1K |
|
215
PUT
Intel
INTC
$530B
| $22.2M | 0.06% |
4,646
-2
| -0% | -$99 |
|
|
ATVI
216
PUT
DELISTED
Activision Blizzard
ATVI
| $22M | 0.06% |
4,658
+1,660
| +55% | +$76.2K |
|
217
CALL
US Bancorp Series B Preferred Stock
USB.PRH
$749M
| $22M | 0.06% |
4,194
-792
| -16% | -$15.5K |
|
218
CALL
Lockheed Martin
LMT
$117B
| $21.8M | 0.06% |
600
+123
| +26% | +$41.1K |
|
219
CALL
3M
MMM
$89.1B
| $21.8M | 0.06% |
1,505
-516
| -26% | -$79.4K |
|
220
CALL
Philip Morris
PM
$293B
| $21.8M | 0.06% |
2,772
-12
| -0.4% | -$991 |
|
221
PUT
Morgan Stanley
MS
$340B
| $21.7M | 0.06% |
4,956
+206
| +4% | +$9.19K |
|
222
CALL
Regeneron Pharmaceuticals
REGN
$70.5B
| $21.6M | 0.06% |
690
+408
| +145% | +$136K |
|
223
PUT
ServiceNow
NOW
$105B
| $21.5M | 0.06% |
3,915
-5,285
| -57% | -$278K |
|
|
UCD
224
PUT
DELISTED
PROSHARES ULTRA BLOOMBERG COMMODITY
UCD
| $21.4M | 0.06% |
7,024
+544
| +8% | +$1.65M |
|
225
PUT
Occidental Petroleum
OXY
$56.2B
| $21.1M | 0.06% |
4,189
+3,993
| +2,037% | +$225K |
|
Similar funds
Simplex Trading's Q2 2019 Portfolio in Review
As of Q2 2019, Simplex Trading held 8,406 positions worth $36.6B, up 1.9% from $36B the previous quarter. Its ten largest holdings account for 35% of the portfolio.
Simplex Trading's Q2 2019 filing shows 1,261 new, 2,604 increased, 3,015 reduced and 1,301 closed positions. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 105,724 shares worth $14M. The largest sale was Invesco QQQ Trust, an estimated $123M.
By sector, the portfolio is most concentrated in Technology at 0.5% of assets, up from 0.42% a quarter earlier, followed by Communication Services and Healthcare.
- Simplex Trading's largest Q2 2019 buy was iShares 20+ Year Treasury Bond ETF: 105,724 shares worth $14M.
- Simplex Trading added most to NVIDIA in Q2 2019, an estimated $29.6M increase.
- Simplex Trading's biggest Q2 2019 reduction was State Street SPDR S&P 500 ETF Trust, cutting an estimated $40.6M.
- Simplex Trading fully exited Invesco QQQ Trust in Q2 2019, selling an estimated $123M.
- Simplex Trading's ten largest holdings make up 35% of its $36.6B portfolio in Q2 2019.
- Simplex Trading opened 1,261 new positions and closed 1,301 in Q2 2019.
- Simplex Trading's portfolio value rose 1.9% quarter-over-quarter to $36.6B.
Based on Simplex Trading's 13F filing for Q2 2019, filed 26 Jul 2019.