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 |
Goldman Sachs
GS
|
+$40.4M |
| 2 |
NVIDIA
NVDA
|
+$23.1M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$21.5M |
| 4 |
Wells Fargo
WFC
|
+$20.8M |
| 5 |
Micron Technology
MU
|
+$20M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Citigroup
C
|
+$21.4M |
| 2 |
Apple
AAPL
|
+$15.7M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$14.4M |
| 4 |
Eli Lilly
LLY
|
+$10.5M |
| 5 |
iShares Biotechnology ETF
IBB
|
+$8.06M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 9.73% |
| 2 | Communication Services | 9.25% |
| 3 | Consumer Discretionary | 8.76% |
| 4 | Healthcare | 8.53% |
| 5 | Financials | 7.38% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
TYNS
1276
PUT
DELISTED
Direxion Daily 7-10 Year Treasury Bear 1X Shares
TYNS
| $183K | 0.01% |
1,132
-1,206
| -52% | -$34.7K |
|
1277
PUT
Citizens Financial Group
CFG
$30.3B
| $182K | 0.01% |
1,520
+1,368
| +900% | +$49.9K |
|
1278
Warner Bros
WBD
$66B
| $182K | 0.01% |
6,264
+6,144
| +5,120% | +$172K |
|
|
CVO
1279
DELISTED
Cenevo, Inc.
CVO
| $182K | 0.01% |
+36,328
| New | +$225K |
|
|
KCG
1280
CALL
DELISTED
KCG Holdings, Inc.
KCG
| $182K | 0.01% |
450
+205
| +84% | +$3.05K |
|
|
TVRD
1281
CALL
Tvardi Therapeutics
TVRD
$23.6M
| $181K | 0.01% |
8
+5
| +167% | +$2.67K |
|
|
ZEN
1282
DELISTED
ZENDESK INC
ZEN
| $181K | 0.01% |
6,485
-1,584
| -20% | -$41K |
|
|
GNC
1283
PUT
DELISTED
GNC Holdings, Inc.
GNC
| $181K | 0.01% |
694
+177
| +34% | +$1.52K |
|
|
MYCC
1284
DELISTED
ClubCorp Holdings, Inc.
MYCC
| $181K | 0.01% |
11,283
-15,899
| -58% | -$261K |
|
|
WLL
1285
PUT
DELISTED
Whiting Petroleum Corporation
WLL
| $181K | 0.01% |
3
-2
| -40% | -$6.47K |
|
1286
CALL
Agilent Technologies
A
$39.1B
| $180K | 0.01% |
596
+423
| +245% | +$21.4K |
|
1287
Teradata
TDC
$2.7B
| $180K | 0.01% |
5,785
+5,523
| +2,108% | +$167K |
|
|
AKS
1288
PUT
DELISTED
AK Steel Holding Corp
AKS
| $180K | 0.01% |
859
-831
| -49% | -$7.12K |
|
|
EGN
1289
DELISTED
Energen
EGN
| $180K | 0.01% |
3,307
+940
| +40% | +$50.8K |
|
1290
CALL
PayPal
PYPL
$49.5B
| $179K | 0.01% |
1,195
-1,547
| -56% | -$64.7K |
|
1291
PUT
TSMC
TSM
$2.1T
| $179K | 0.01% |
1,060
+934
| +741% | +$29.2K |
|
1292
PUT
Corpay
CPAY
$24.3B
| $179K | 0.01% |
288
+268
| +1,340% | +$42K |
|
|
SIVB
1293
DELISTED
SVB Financial Group
SIVB
| $179K | 0.01% |
+965
| New | +$175K |
|
1294
PUT
Avis
CAR
$5.62B
| $178K | 0.01% |
459
-49
| -10% | -$1.7K |
|
1295
PUT
Ciena
CIEN
$55B
| $178K | 0.01% |
901
+480
| +114% | +$11.8K |
|
1296
PUT
Centene
CNC
$31.2B
| $178K | 0.01% |
546
-96
| -15% | -$3.21K |
|
1297
CALL
Elevance Health
ELV
$82.1B
| $178K | 0.01% |
444
+93
| +26% | +$14.8K |
|
1298
CALL
Itaú Unibanco
ITUB
$91.5B
| $178K | 0.01% |
1,909
+955
| +100% | +$5.66K |
|
1299
CALL
MACOM Technology Solutions
MTSI
$20.4B
| $178K | 0.01% |
339
-53
| -14% | -$2.48K |
|
1300
PUT
NOV
NOV
$7.43B
| $178K | 0.01% |
310
-755
| -71% | -$29.4K |
|
Similar funds
Simplex Trading's Q1 2017 Portfolio in Review
As of Q1 2017, Simplex Trading held 7,485 positions worth $2.31B, up 38% from $1.67B the previous quarter. Its ten largest holdings account for 18% of the portfolio.
Simplex Trading deployed $551M of net new capital in Q1 2017, opening 1,662 new positions and adding to 2,374 existing holdings. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 179,511 shares worth $21.7M.
By sector, the portfolio is most concentrated in Technology at 9.7% of assets, up from 7.2% a quarter earlier, followed by Communication Services and Consumer Discretionary.
On the sell side, the largest reduction was Citigroup, an estimated $21.4M trimmed.
- Simplex Trading's largest Q1 2017 buy was iShares 20+ Year Treasury Bond ETF: 179,511 shares worth $21.7M.
- Simplex Trading added most to Goldman Sachs in Q1 2017, an estimated $40.4M increase.
- Simplex Trading's biggest Q1 2017 reduction was Citigroup, cutting an estimated $21.4M.
- Simplex Trading fully exited Invesco QQQ Trust in Q1 2017, selling an estimated $14.4M.
- Simplex Trading's ten largest holdings make up 18% of its $2.31B portfolio in Q1 2017.
- Simplex Trading opened 1,662 new positions and closed 1,369 in Q1 2017.
- Simplex Trading's portfolio value rose 38% quarter-over-quarter to $2.31B.
Based on Simplex Trading's 13F filing for Q1 2017, filed 21 Apr 2017.