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 | |
|---|---|---|---|---|---|---|
|
EB
2301
PUT
DELISTED
Eventbrite
EB
| $662K | ﹤0.01% |
908
-114
| -11% | -$1.92K |
|
2302
CALL
Travere Therapeutics
TVTX
$5.33B
| $662K | ﹤0.01% |
454
+445
| +4,944% | +$6.7K |
|
|
WBC
2303
PUT
DELISTED
WABCO HOLDINGS INC.
WBC
| $661K | ﹤0.01% |
49
+25
| +104% | +$3.36K |
|
|
AVYA
2304
PUT
DELISTED
Avaya Holdings Corp. Common Stock
AVYA
| $660K | ﹤0.01% |
817
-303
| -27% | -$3.6K |
|
|
CONN
2305
CALL
DELISTED
Conn's Inc.
CONN
| $659K | ﹤0.01% |
1,577
+1,331
| +541% | +$10.9K |
|
2306
PUT
Rapid7
RPD
$634M
| $658K | ﹤0.01% |
152
+49
| +48% | +$2.57K |
|
2307
PUT
Galicia Financial Group
GGAL
$7.92B
| $657K | ﹤0.01% |
933
+320
| +52% | +$4.06K |
|
2308
CALL
Trane Technologies
TT
$106B
| $657K | ﹤0.01% |
142
-2
| -1% | -$243 |
|
2309
CALL
Starwood Property Trust
STWD
$6.12B
| $656K | ﹤0.01% |
640
+632
| +7,900% | +$13.8K |
|
2310
CALL
Huazhu Hotels Group
HTHT
$12.4B
| $655K | ﹤0.01% |
228
+179
| +365% | +$6.09K |
|
2311
PUT
Park Hotels & Resorts
PK
$2.97B
| $655K | ﹤0.01% |
829
+675
| +438% | +$12.7K |
|
2312
CALL
ScottsMiracle-Gro
SMG
$4.03B
| $655K | ﹤0.01% |
64
-6
| -9% | -$660 |
|
|
SPR
2313
DELISTED
Spirit AeroSystems
SPR
| $655K | ﹤0.01% |
27,395
+25,162
| +1,127% | +$1.39M |
|
2314
CALL
AllianceBernstein
AB
$3.47B
| $654K | ﹤0.01% |
352
+253
| +256% | +$7.47K |
|
|
PTLA
2315
DELISTED
Portola Pharmaceuticals, Inc.
PTLA
| $654K | ﹤0.01% |
91,834
+37,198
| +68% | +$464K |
|
2316
PUT
Aecom
ACM
$9.07B
| $653K | ﹤0.01% |
219
+207
| +1,725% | +$8.86K |
|
2317
PUT
AGCO
AGCO
$8.78B
| $652K | ﹤0.01% |
138
-55
| -28% | -$3.5K |
|
2318
Axalta
AXTA
$7.01B
| $652K | ﹤0.01% |
37,798
+30,645
| +428% | +$784K |
|
2319
PUT
O-I Glass
OI
$1.39B
| $652K | ﹤0.01% |
918
-389
| -30% | -$4.26K |
|
2320
PUT
Toronto Dominion Bank
TD
$198B
| $652K | ﹤0.01% |
154
-112
| -42% | -$5.75K |
|
2321
PUT
Western Union
WU
$2.57B
| $652K | ﹤0.01% |
360
+242
| +205% | +$5.93K |
|
2322
PUT
Blackstone Mortgage Trust
BXMT
$2.82B
| $651K | ﹤0.01% |
350
+340
| +3,400% | +$11.5K |
|
2323
CALL
STAAR Surgical
STAA
$1.16B
| $651K | ﹤0.01% |
202
+184
| +1,022% | +$6.2K |
|
2324
CALL
Dolby
DLB
$4.72B
| $650K | ﹤0.01% |
120
+119
| +11,900% | +$7.8K |
|
2325
CALL
Burlington
BURL
$22B
| $649K | ﹤0.01% |
41
-89
| -68% | -$18.7K |
|
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.