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 |
SPDR Gold Trust
GLD
|
+$31.6M |
| 2 |
iShares Silver Trust
SLV
|
+$28.1M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$25.1M |
| 4 |
JPMorgan Chase
JPM
|
+$24.5M |
| 5 |
Direxion Daily Junior Gold Miners Index Bull 2X ETF
JNUG
|
+$24M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Alphabet (Google) Class C
GOOG
|
+$51.6M |
| 2 |
Amazon
AMZN
|
+$47.4M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$44.7M |
| 4 |
Netflix
NFLX
|
+$38.3M |
| 5 |
NVIDIA
NVDA
|
+$31.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.49% |
| 2 | Healthcare | 0.33% |
| 3 | Consumer Discretionary | 0.32% |
| 4 | Financials | 0.16% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
151
PUT
iShares Silver Trust
SLV
$28.4B
| $38.1M | 0.07% |
29,159
+24,902
| +585% | +$391K |
|
|
XYZ
152
PUT
Block Inc
XYZ
$47.8B
| $37.6M | 0.07% |
7,169
+3,481
| +94% | +$238K |
|
153
PUT
Eli Lilly
LLY
$1.05T
| $37.5M | 0.07% |
2,704
+447
| +20% | +$61.4K |
|
154
PUT
Amgen
AMGN
$198B
| $37.2M | 0.07% |
1,834
-362
| -16% | -$79.1K |
|
155
PUT
Qualcomm
QCOM
$183B
| $37.1M | 0.07% |
5,480
-1,666
| -23% | -$137K |
|
156
CALL
UnitedHealth
UNH
$396B
| $36.6M | 0.06% |
1,469
-1,152
| -44% | -$317K |
|
157
CALL
Goldman Sachs
GS
$320B
| $36.4M | 0.06% |
2,354
+751
| +47% | +$159K |
|
|
158
PUT
Goldman Sachs
GS
$320B
| $36.4M | 0.06% |
2,354
-633
| -21% | -$134K |
|
159
PUT
Chevron
CVX
$381B
| $36.4M | 0.06% |
5,021
+2,345
| +88% | +$232K |
|
|
TIF
160
PUT
DELISTED
Tiffany & Co.
TIF
| $35.9M | 0.06% |
2,772
-1,070
| -28% | -$141K |
|
161
CALL
Regeneron Pharmaceuticals
REGN
$70.5B
| $35.8M | 0.06% |
734
-28
| -4% | -$11.6K |
|
162
CALL
Citigroup
C
$223B
| $35.7M | 0.06% |
8,479
+1,677
| +25% | +$113K |
|
163
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
$155M
| $34.8M | 0.06% |
11,772
+9,641
| +452% | +$15.7M |
|
164
PUT
Expedia Group
EXPE
$31.8B
| $34.8M | 0.06% |
6,178
+3,352
| +119% | +$322K |
|
|
165
PUT
Citigroup
C
$223B
| $34.1M | 0.06% |
8,099
+1,232
| +18% | +$82.7K |
|
|
166
CALL
iShares Silver Trust
SLV
$28.4B
| $34M | 0.06% |
26,016
+6,816
| +36% | +$107K |
|
167
CALL
Roku
ROKU
$21.4B
| $33.6M | 0.06% |
3,839
-1,068
| -22% | -$123K |
|
168
Tesla
TSLA
$1.42T
| $33.6M | 0.06% |
961,200
-383,640
| -29% | -$15.9M |
|
169
CALL
Intuitive Surgical
ISRG
$124B
| $33.2M | 0.06% |
2,010
+51
| +3% | +$9.34K |
|
170
PUT
ServiceNow
NOW
$105B
| $33M | 0.06% |
5,760
-2,515
| -30% | -$157K |
|
|
IPFF
171
PUT
DELISTED
iShares International Preferred Stock ETF
IPFF
| $32.8M | 0.06% |
12,511
+12,064
| +2,699% | +$166K |
|
172
CALL
Baidu
BIDU
$36.8B
| $32.5M | 0.06% |
3,228
-995
| -24% | -$121K |
|
173
PUT
Mercado Libre
MELI
$92.4B
| $32.3M | 0.06% |
661
-381
| -37% | -$235K |
|
|
SHNY
174
PUT
DELISTED
Direxion Daily Silver Miners Index Bull 2X Shares
SHNY
| $32M | 0.06% |
16,598
+9,184
| +124% | +$17.7M |
|
175
PUT
Blackstone
BX
$152B
| $31.9M | 0.06% |
6,994
+1,633
| +30% | +$90.3K |
|
Similar funds
Simplex Trading's Q1 2020 Portfolio in Review
As of Q1 2020, Simplex Trading held 8,783 positions worth $56.7B, up 24% from $45.7B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading's Q1 2020 filing shows 1,512 new, 3,249 increased, 2,705 reduced and 1,159 closed positions. Its largest new stake was SPDR Gold Trust: 212,230 shares worth $31.4M. The largest sale was Alphabet (Google) Class C, an estimated $51.6M.
By sector, the portfolio is most concentrated in Technology at 0.49% of assets, down from 0.75% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q1 2020 buy was SPDR Gold Trust: 212,230 shares worth $31.4M.
- Simplex Trading added most to JPMorgan Chase in Q1 2020, an estimated $24.5M increase.
- Simplex Trading's biggest Q1 2020 reduction was Amazon, cutting an estimated $47.4M.
- Simplex Trading fully exited Alphabet (Google) Class C in Q1 2020, selling an estimated $51.6M.
- Simplex Trading's ten largest holdings make up 50% of its $56.7B portfolio in Q1 2020.
- Simplex Trading opened 1,512 new positions and closed 1,159 in Q1 2020.
- Simplex Trading's portfolio value rose 24% quarter-over-quarter to $56.7B.
Based on Simplex Trading's 13F filing for Q1 2020, filed 29 Apr 2020.